diff --git a/Recyclable.Collections.Benchmarks/ListVsLinkedListBenchmarks.cs b/Recyclable.Collections.Benchmarks/ListVsLinkedListBenchmarks.cs
index 52d8471..579a4d8 100644
--- a/Recyclable.Collections.Benchmarks/ListVsLinkedListBenchmarks.cs
+++ b/Recyclable.Collections.Benchmarks/ListVsLinkedListBenchmarks.cs
@@ -14,6 +14,12 @@
 		protected object[]? _testObjects;
 		protected object[] TestObjects => _testObjects ??= Enumerable.Range(1, TestObjectCount).Select(x => new object()).ToArray();
 
+		private List<object>? _testObjectsAsList;
+		protected List<object> TestObjectsAsList => _testObjectsAsList ??= TestObjects.ToList();
+
+		private RecyclableArrayList<object>? _testObjectsAsRecyclableArrayList;
+		protected RecyclableArrayList<object> TestObjectsAsRecyclableArrayList => _testObjectsAsRecyclableArrayList ??= TestObjects.ToRecyclableArrayList();
+
 		protected static void DoNothing<T>(T obj)
 		{
 			_ = obj;
diff --git a/Recyclable.Collections.Benchmarks/Program.cs b/Recyclable.Collections.Benchmarks/Program.cs
index 52450ac..c9eba31 100644
--- a/Recyclable.Collections.Benchmarks/Program.cs
+++ b/Recyclable.Collections.Benchmarks/Program.cs
@@ -3,8 +3,8 @@ using Recyclable.Collections.Benchmarks;
 
 //BenchmarkSwitcher.FromAssembly(typeof(Program).Assembly).Run(new[] { "-f*" });
 
-BenchmarkRunner.Run<RecyclableCollectionsBenchmarks>();
-//BenchmarkRunner.Run<RefVsInstanceMemberBenchmarks>();
+//BenchmarkRunner.Run<RecyclableCollectionsBenchmarks>();
+BenchmarkRunner.Run<RefVsInstanceMemberBenchmarks>();
 
 //var benchmark = new RecyclableCollectionsBenchmarks();
 //benchmark.RecyclableArrayList_AddRange_WithCapacity();
diff --git a/Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.Array.cs b/Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.Array.cs
index b87abe3..d82524b 100644
--- a/Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.Array.cs
+++ b/Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.Array.cs
@@ -7,27 +7,17 @@ namespace Recyclable.Collections.Benchmarks
 	{
 		private readonly object[] _testArray;
 
-		//[Benchmark(Baseline = true)]
+		[Benchmark(Baseline = false)]
 		public void Array_Create_WithCapacity()
 		{
-			DoNothing(new object[TestObjectCount]);
+			var data = new object[TestObjectCount];
+			DoNothing(data);
 		}
 
-		//[Benchmark]
-		public void Array_GetItem()
-		{
-			var data = _testArray;
-			var dataCount = TestObjectCount;
-			for (var i = 0; i < dataCount; i++)
-			{
-				DoNothing(data[i]);
-			}
-		}
-
-		//[Benchmark]
+		[Benchmark(Baseline = true)]
 		public void Array_SetItem()
 		{
-			var data = _testArray;
+			var data = TestObjects;
 			var dataCount = TestObjectCount;
 			for (var i = 0; i < dataCount; i++)
 			{
@@ -35,14 +25,25 @@ namespace Recyclable.Collections.Benchmarks
 			}
 		}
 
-		//[Benchmark]
+		[Benchmark]
+		public void Array_GetItem()
+		{
+			var data = TestObjects;
+			var dataCount = TestObjectCount;
+			for (var i = 0; i < dataCount; i++)
+			{
+				DoNothing(data[i]);
+			}
+		}
+
+		[Benchmark]
 		public void Array_Count()
 		{
 			var data = _testArray;
 			DoNothing(data.Length);
 		}
 
-		//[Benchmark]
+		[Benchmark]
 		public void Array_LongCount()
 		{
 			var data = _testArray;
diff --git a/Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.List.cs b/Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.List.cs
index af73248..766a3b3 100644
--- a/Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.List.cs
+++ b/Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.List.cs
@@ -6,7 +6,7 @@ namespace Recyclable.Collections.Benchmarks
 	{
 		private readonly List<object> _testList;
 
-		//[Benchmark(Baseline = true)]
+		//[Benchmark(Baseline = false)]
 		public void List_Create()
 		{
 			var list = new List<object>();
@@ -27,7 +27,7 @@ namespace Recyclable.Collections.Benchmarks
 			DoNothing(list);
 		}
 
-		//[Benchmark]
+		[Benchmark]
 		public void List_Add()
 		{
 			var data = TestObjects;
@@ -39,7 +39,7 @@ namespace Recyclable.Collections.Benchmarks
 			}
 		}
 
-		//[Benchmark(Baseline = true)]
+		[Benchmark(Baseline = false)]
 		public void List_Add_WithCapacity()
 		{
 			var data = TestObjects;
@@ -52,14 +52,38 @@ namespace Recyclable.Collections.Benchmarks
 		}
 
 		[Benchmark]
-		public void List_AddRange()
+		public void List_AddRangeWhenSourceIsArray()
 		{
 			var data = TestObjects;
 			var list = new List<object>();
 			list.AddRange(data);
 		}
 
-		[Benchmark(Baseline = true)]
+		[Benchmark]
+		public void List_AddRangeWhenSourceIsList()
+		{
+			var data = TestObjectsAsList;
+			var list = new List<object>();
+			list.AddRange(data);
+		}
+
+		[Benchmark]
+		public void List_AddRangeWhenSourceIsIList()
+		{
+			var data = (IList<object>)TestObjectsAsList;
+			var list = new List<object>();
+			list.AddRange(data);
+		}
+
+		[Benchmark]
+		public void List_AddRangeWhenSourceIsIEnumerable()
+		{
+			var data = (IEnumerable<object>)TestObjects;
+			var list = new List<object>();
+			list.AddRange(data);
+		}
+
+		[Benchmark(Baseline = false)]
 		public void List_AddRange_WithCapacity()
 		{
 			var data = TestObjects;
@@ -68,21 +92,10 @@ namespace Recyclable.Collections.Benchmarks
 			list.AddRange(data);
 		}
 
-		//[Benchmark]
-		public void List_GetItem()
-		{
-			var data = _testList;
-			var dataCount = TestObjectCount;
-			for (var i = 0; i < dataCount; i++)
-			{
-				DoNothing(data[i]);
-			}
-		}
-
-		//[Benchmark]
+		[Benchmark]
 		public void List_SetItem()
 		{
-			var data = _testList;
+			var data = TestObjectsAsList;
 			var dataCount = TestObjectCount;
 			for (var i = 0; i < dataCount; i++)
 			{
@@ -90,7 +103,18 @@ namespace Recyclable.Collections.Benchmarks
 			}
 		}
 
-		//[Benchmark]
+		[Benchmark]
+		public void List_GetItem()
+		{
+			var data = TestObjectsAsList;
+			var dataCount = TestObjectCount;
+			for (var i = 0; i < dataCount; i++)
+			{
+				DoNothing(data[i]);
+			}
+		}
+
+		[Benchmark]
 		public void List_Count()
 		{
 			var data = _testList;
diff --git a/Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.RecyclableArrayList.cs b/Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.RecyclableArrayList.cs
index 5451f76..08d3f16 100644
--- a/Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.RecyclableArrayList.cs
+++ b/Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.RecyclableArrayList.cs
@@ -41,7 +41,7 @@ namespace Recyclable.Collections.Benchmarks
 			DoNothing(list);
 		}
 
-		//[Benchmark]
+		[Benchmark]
 		public void RecyclableArrayList_Add()
 		{
 			var data = TestObjects;
@@ -53,7 +53,7 @@ namespace Recyclable.Collections.Benchmarks
 			}
 		}
 
-		//[Benchmark]
+		[Benchmark]
 		public void RecyclableArrayList_Add_WithCapacity()
 		{
 			var data = TestObjects;
@@ -66,13 +66,45 @@ namespace Recyclable.Collections.Benchmarks
 		}
 
 		[Benchmark]
-		public void RecyclableArrayList_AddRange()
+		public void RecyclableArrayList_AddRangeWhenSourceIsArray()
 		{
 			var data = TestObjects;
 			using var list = new RecyclableArrayList<object>();
 			list.AddRange(data);
 		}
 
+		[Benchmark]
+		public void RecyclableArrayList_AddRangeWhenSourceIsList()
+		{
+			var data = TestObjectsAsList;
+			using var list = new RecyclableArrayList<object>();
+			list.AddRange(data);
+		}
+
+		[Benchmark]
+		public void RecyclableArrayList_AddRangeWhenSourceIsIList()
+		{
+			var data = (IList<object>)TestObjectsAsList;
+			using var list = new RecyclableArrayList<object>();
+			list.AddRange(data);
+		}
+
+		[Benchmark]
+		public void RecyclableArrayList_AddRangeWhenSourceIsIEnumerable()
+		{
+			var data = (IEnumerable<object>)TestObjects;
+			using var list = new RecyclableArrayList<object>();
+			list.AddRange(data);
+		}
+
+		[Benchmark]
+		public void RecyclableArrayList_AddRangeWhenSourceIsRecyclableArrayList()
+		{
+			var data = TestObjectsAsRecyclableArrayList;
+			using var list = new RecyclableArrayList<object>();
+			list.AddRange(data);
+		}
+
 		[Benchmark]
 		public void RecyclableArrayList_AddRange_WithCapacity()
 		{
@@ -82,10 +114,23 @@ namespace Recyclable.Collections.Benchmarks
 			list.AddRange(data);
 		}
 
-		//[Benchmark]
+		[Benchmark]
+		public void RecyclableArrayList_SetItem()
+		{
+			var data = TestObjectsAsRecyclableArrayList;
+			var dataCount = TestObjectCount;
+			for (var i = 0; i < dataCount; i++)
+			{
+				data[i] = TestObjects[i];
+			}
+
+			data.Count = dataCount;
+		}
+
+		[Benchmark]
 		public void RecyclableArrayList_GetItem()
 		{
-			var data = _testRecyclableArrayList;
+			var data = TestObjectsAsRecyclableArrayList;
 			var dataCount = TestObjectCount;
 			for (var i = 0; i < dataCount; i++)
 			{
@@ -93,18 +138,7 @@ namespace Recyclable.Collections.Benchmarks
 			}
 		}
 
-		//[Benchmark]
-		public void RecyclableArrayList_SetItem()
-		{
-			var data = _testRecyclableArrayList;
-			var dataCount = TestObjectCount;
-			for (var i = 0; i < dataCount; i++)
-			{
-				data[i] = TestObjects[i];
-			}
-		}
-
-		//[Benchmark]
+		[Benchmark]
 		public void RecyclableArrayList_Count()
 		{
 			var data = _testRecyclableArrayList;
diff --git a/Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.RecyclableList.cs b/Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.RecyclableList.cs
index 27ff894..d6a166c 100644
--- a/Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.RecyclableList.cs
+++ b/Recyclable.Collections.Benchmarks/RecyclableCollectionsBenchmarks.RecyclableList.cs
@@ -27,7 +27,7 @@ namespace Recyclable.Collections.Benchmarks
 			DoNothing(list);
 		}
 
-		[Benchmark]
+		//[Benchmark]
 		public void RecyclableList_Add()
 		{
 			var data = TestObjects;
@@ -39,7 +39,7 @@ namespace Recyclable.Collections.Benchmarks
 			}
 		}
 
-		[Benchmark]
+		//[Benchmark]
 		public void RecyclableList_Add_WithCapacity()
 		{
 			var data = TestObjects;
diff --git a/Recyclable.Collections.Benchmarks/RefVsInstanceMemberBenchmarks.cs b/Recyclable.Collections.Benchmarks/RefVsInstanceMemberBenchmarks.cs
index ed3c1b3..2851a58 100644
--- a/Recyclable.Collections.Benchmarks/RefVsInstanceMemberBenchmarks.cs
+++ b/Recyclable.Collections.Benchmarks/RefVsInstanceMemberBenchmarks.cs
@@ -18,14 +18,27 @@ namespace Recyclable.Collections.Benchmarks
 
 		private class TestCase
 		{
+			private int[] _items = new int[123];
 			private int _count = 123;
+			private int Add(int count)
+			{
+				return count;
+			}
+
 			public int Count
 			{
 				get => _count;
 				set => _count = value;
 			}
 
-			public ref int GetRefCount()
+			public ref int GetCountAsRefCount2()
+			{
+				ref int count = ref _count;
+				count = 234;
+				return ref count;
+			}
+
+			public ref int GetCountAsRefCount3()
 			{
 				ref int count = ref _count;
 				count = 234;
@@ -33,30 +46,299 @@ namespace Recyclable.Collections.Benchmarks
 				return ref count;
 			}
 
-			private int Add(int count)
+			public ref int GetCountAsRefCount4()
 			{
-				return count;
+				ref int count = ref _count;
+				count = 234;
+				_ = Add(count);
+				_ = Add(count);
+				return ref count;
 			}
 
-			public int GetCount()
+			public ref int GetCountAsRefCount5()
+			{
+				ref int count = ref _count;
+				count = 234;
+				_ = Add(count);
+				_ = Add(count);
+				_ = Add(count);
+				return ref count;
+			}
+
+			public int GetCountAsInstanceMember2()
+			{
+				_count = 234;
+				return _count;
+			}
+
+			public int GetCountAsInstanceMember3()
 			{
 				_count = 234;
 				_ = Add(_count);
 				return _count;
 			}
+
+			public int GetCountAsInstanceMember4()
+			{
+				_count = 234;
+				_ = Add(_count);
+				_ = Add(_count);
+				return _count;
+			}
+
+			public int GetCountAsInstanceMember5()
+			{
+				_count = 234;
+				_ = Add(_count);
+				_ = Add(_count);
+				_ = Add(_count);
+				return _count;
+			}
+
+			public int GetLengthAsArray2()
+			{
+				_ = Add(_items.Length);
+				return _items.Length;
+			}
+
+			public int GetLengthAsArray3()
+			{
+				_ = Add(_items.Length);
+				_ = Add(_items.Length);
+				return _items.Length;
+			}
+
+			public int GetLengthAsArray4()
+			{
+				_ = Add(_items.Length);
+				_ = Add(_items.Length);
+				_ = Add(_items.Length);
+				return _items.Length;
+			}
+
+			public int GetLengthAsArray5()
+			{
+				_ = Add(_items.Length);
+				_ = Add(_items.Length);
+				_ = Add(_items.Length);
+				_ = Add(_items.Length);
+				return _items.Length;
+			}
+
+			public int GetLengthAsArray6()
+			{
+				_ = Add(_items.Length);
+				_ = Add(_items.Length);
+				_ = Add(_items.Length);
+				_ = Add(_items.Length);
+				_ = Add(_items.Length);
+				return _items.Length;
+			}
+
+			public int GetLengthAsArrayLocalVar5()
+			{
+				var items = _items;
+				_ = Add(items.Length);
+				_ = Add(items.Length);
+				_ = Add(items.Length);
+				_ = Add(items.Length);
+				return items.Length;
+			}
+
+			public int GetLengthAsArrayLocalVar6()
+			{
+				var items = _items;
+				_ = Add(items.Length);
+				_ = Add(items.Length);
+				_ = Add(items.Length);
+				_ = Add(items.Length);
+				_ = Add(items.Length);
+				return items.Length;
+			}
+
+			public int GetLengthAsRefArray2()
+			{
+				ref int[] items = ref _items;
+				_ = Add(items.Length);
+				return items.Length;
+			}
+
+			public int GetLengthAsRefArray3()
+			{
+				ref int[] items = ref _items;
+				_ = Add(items.Length);
+				_ = Add(items.Length);
+				return items.Length;
+			}
+
+			public int GetLengthAsRefArray4()
+			{
+				ref int[] items = ref _items;
+				_ = Add(items.Length);
+				_ = Add(items.Length);
+				_ = Add(items.Length);
+				return items.Length;
+			}
+
+			public int GetLengthAsRefArray5()
+			{
+				ref int[] items = ref _items;
+				_ = Add(items.Length);
+				_ = Add(items.Length);
+				_ = Add(items.Length);
+				_ = Add(items.Length);
+				return items.Length;
+			}
+
+			public int GetLengthAsRefArray6()
+			{
+				ref int[] items = ref _items;
+				_ = Add(items.Length);
+				_ = Add(items.Length);
+				_ = Add(items.Length);
+				_ = Add(items.Length);
+				_ = Add(items.Length);
+				return items.Length;
+			}
 		}
 
 		[Benchmark]
-		public void Ref()
+		public void RefToInt2()
 		{
-			var count = _testCase.GetRefCount();
+			var count = _testCase.GetCountAsRefCount2();
+			DoNothing(count);
+		}
+
+		[Benchmark]
+		public void RefToInt3()
+		{
+			var count = _testCase.GetCountAsRefCount3();
+			DoNothing(count);
+		}
+
+		[Benchmark]
+		public void RefToInt4()
+		{
+			var count = _testCase.GetCountAsRefCount4();
+			DoNothing(count);
+		}
+
+		[Benchmark]
+		public void RefToInt5()
+		{
+			var count = _testCase.GetCountAsRefCount5();
 			DoNothing(count);
 		}
 
 		[Benchmark(Baseline = true)]
-		public void InstanceMember()
+		public void IntInstanceMember2()
 		{
-			var count = _testCase.GetCount();
+			var count = _testCase.GetCountAsInstanceMember2();
+			DoNothing(count);
+		}
+
+		[Benchmark(Baseline = false)]
+		public void IntInstanceMember3()
+		{
+			var count = _testCase.GetCountAsInstanceMember3();
+			DoNothing(count);
+		}
+
+		[Benchmark(Baseline = false)]
+		public void IntInstanceMember4()
+		{
+			var count = _testCase.GetCountAsInstanceMember4();
+			DoNothing(count);
+		}
+
+		[Benchmark(Baseline = false)]
+		public void IntInstanceMember5()
+		{
+			var count = _testCase.GetCountAsInstanceMember5();
+			DoNothing(count);
+		}
+
+		[Benchmark]
+		public void RefToArray2()
+		{
+			var count = _testCase.GetLengthAsRefArray2();
+			DoNothing(count);
+		}
+
+		[Benchmark]
+		public void RefToArray3()
+		{
+			var count = _testCase.GetLengthAsRefArray3();
+			DoNothing(count);
+		}
+
+		[Benchmark]
+		public void RefToArray4()
+		{
+			var count = _testCase.GetLengthAsRefArray4();
+			DoNothing(count);
+		}
+
+		[Benchmark]
+		public void RefToArray5()
+		{
+			var count = _testCase.GetLengthAsRefArray5();
+			DoNothing(count);
+		}
+
+		[Benchmark]
+		public void RefToArray6()
+		{
+			var count = _testCase.GetLengthAsRefArray6();
+			DoNothing(count);
+		}
+
+		[Benchmark(Baseline = false)]
+		public void ArrayInstanceMember2()
+		{
+			var count = _testCase.GetLengthAsArray2();
+			DoNothing(count);
+		}
+
+		[Benchmark(Baseline = false)]
+		public void ArrayInstanceMember3()
+		{
+			var count = _testCase.GetLengthAsArray3();
+			DoNothing(count);
+		}
+
+		[Benchmark(Baseline = false)]
+		public void ArrayInstanceMember4()
+		{
+			var count = _testCase.GetLengthAsArray4();
+			DoNothing(count);
+		}
+
+		[Benchmark(Baseline = false)]
+		public void ArrayInstanceMember5()
+		{
+			var count = _testCase.GetLengthAsArray5();
+			DoNothing(count);
+		}
+
+		[Benchmark(Baseline = false)]
+		public void ArrayInstanceMember6()
+		{
+			var count = _testCase.GetLengthAsArray6();
+			DoNothing(count);
+		}
+
+		[Benchmark(Baseline = false)]
+		public void ArrayInstanceMemberLocalVar5()
+		{
+			var count = _testCase.GetLengthAsArrayLocalVar5();
+			DoNothing(count);
+		}
+
+		[Benchmark(Baseline = false)]
+		public void ArrayInstanceMemberLocalVar6()
+		{
+			var count = _testCase.GetLengthAsArrayLocalVar6();
 			DoNothing(count);
 		}
 	}
diff --git a/Recyclable.Collections/RecyclableArrayList.cs b/Recyclable.Collections/RecyclableArrayList.cs
index 27fa4ea..2542b79 100644
--- a/Recyclable.Collections/RecyclableArrayList.cs
+++ b/Recyclable.Collections/RecyclableArrayList.cs
@@ -82,7 +82,6 @@ namespace Recyclable.Collections
 		public RecyclableArrayList(int initialCapacity)
 #pragma warning restore CS8618
 		{
-			// _memory will be initialized when the 1st item is added
 			if (initialCapacity > 0)
 			{
 				_memory = SetNewLength(_memory, initialCapacity);
@@ -90,6 +89,34 @@ namespace Recyclable.Collections
 			}
 		}
 
+#pragma warning disable CS8618 // _memory will be initialized when the 1st item is added
+		public RecyclableArrayList(RecyclableArrayList<T> source)
+#pragma warning restore CS8618
+		{
+			AddRange(source);
+		}
+
+#pragma warning disable CS8618 // _memory will be initialized when the 1st item is added
+		public RecyclableArrayList(in T[] source)
+#pragma warning restore CS8618
+		{
+			AddRange(source);
+		}
+
+#pragma warning disable CS8618 // _memory will be initialized when the 1st item is added
+		public RecyclableArrayList(List<T> source)
+#pragma warning restore CS8618
+		{
+			AddRange(source);
+		}
+
+#pragma warning disable CS8618 // _memory will be initialized when the 1st item is added
+		public RecyclableArrayList(IList<T> source)
+#pragma warning restore CS8618
+		{
+			AddRange(source);
+		}
+
 		public RecyclableArrayList(IEnumerable<T> source, int initialCapacity = RecyclableDefaults.Capacity)
 		{
 			_memory = SetNewLength(_memory, initialCapacity);
@@ -126,7 +153,7 @@ namespace Recyclable.Collections
 
 		public bool IsReadOnly { get; } = false;
 
-		public void Add(in T item)
+		public void Add(T item)
 		{
 			int requestedCapacity = _count + 1;
 			if (_capacity < requestedCapacity)
@@ -152,7 +179,7 @@ namespace Recyclable.Collections
 			_count = targetCapacity;
 		}
 
-		public void AddRange(in List<T> items)
+		public void AddRange(List<T> items)
 		{
 			var sourceItemsCount = items.Count;
 			var targetCapacity = _count + sourceItemsCount;
@@ -165,7 +192,20 @@ namespace Recyclable.Collections
 			_count = targetCapacity;
 		}
 
-		public void AddRange(in RecyclableArrayList<T> items)
+		public void AddRange(IList<T> items)
+		{
+			var sourceItemsCount = items.Count;
+			var targetCapacity = _count + sourceItemsCount;
+			if (_capacity < targetCapacity)
+			{
+				_ = EnsureCapacity(targetCapacity);
+			}
+
+			items.CopyTo(_memory, _count);
+			_count = targetCapacity;
+		}
+
+		public void AddRange(RecyclableArrayList<T> items)
 		{
 			var sourceItemsCount = items._count;
 			var targetCapacity = _count + sourceItemsCount;
@@ -180,10 +220,17 @@ namespace Recyclable.Collections
 			_count = targetCapacity;
 		}
 
-		public void AddRange(IEnumerable<T> source)
+		public void AddRange(IEnumerable<T> source, int growByCount = 100)
 		{
+			ref int capacity = ref _capacity;
+			ref int count = ref _count;
 			foreach (var item in source)
 			{
+				if (capacity == count)
+				{
+					_ = EnsureCapacity(capacity * growByCount);
+				}
+
 				Add(item);
 			}
 		}
diff --git a/Recyclable.Collections/RecyclableArrayList_CreateBenchmarks.png b/Recyclable.Collections/RecyclableArrayList_CreateBenchmarks.png
index ed3622a..b70bdfd 100644
Binary files a/Recyclable.Collections/RecyclableArrayList_CreateBenchmarks.png and b/Recyclable.Collections/RecyclableArrayList_CreateBenchmarks.png differ
diff --git a/Recyclable.Collections/RecyclableDefaults.cs b/Recyclable.Collections/RecyclableDefaults.cs
index 09e80ce..b7ea187 100644
--- a/Recyclable.Collections/RecyclableDefaults.cs
+++ b/Recyclable.Collections/RecyclableDefaults.cs
@@ -3,7 +3,7 @@
 	public class RecyclableDefaults
 	{
 		public const int BlockSize = 10_240;
-		public const int Capacity = 8;
+		public const int Capacity = 1;
 		public const int MinPooledArrayLength = 100;
 	}
 }
diff --git a/Recyclable.Collections/RecyclableListExtensions.cs b/Recyclable.Collections/RecyclableListExtensions.cs
index 03ae6dc..959c07c 100644
--- a/Recyclable.Collections/RecyclableListExtensions.cs
+++ b/Recyclable.Collections/RecyclableListExtensions.cs
@@ -121,11 +121,26 @@ namespace Recyclable.Collections
 			return -1;
 		}
 
-		//[MethodImpl(MethodImplOptions.AggressiveInlining)]
-		//public static RecyclableList<T> ToRecyclableList<T>(this IList<T> values, int blockSize = RecyclableDefaults.BlockSize) => new(values, blockSize);
+		[MethodImpl(MethodImplOptions.AggressiveInlining)]
+		public static RecyclableList<T> ToRecyclableList<T>(this IList<T> values, int blockSize = RecyclableDefaults.BlockSize) => new(values, blockSize);
 
-		//[MethodImpl(MethodImplOptions.AggressiveInlining)]
-		//public static RecyclableList<T> ToRecyclableList<T>(this IEnumerable<T> values, int blockSize = RecyclableDefaults.BlockSize) => new(values, blockSize);
+		[MethodImpl(MethodImplOptions.AggressiveInlining)]
+		public static RecyclableList<T> ToRecyclableList<T>(this List<T> values, int blockSize = RecyclableDefaults.BlockSize) => new(values, blockSize);
+
+		[MethodImpl(MethodImplOptions.AggressiveInlining)]
+		public static RecyclableArrayList<T> ToRecyclableArrayList<T>(this IEnumerable<T> values) => new(values, values.TryGetNonEnumeratedCount(out int count) ? count : RecyclableDefaults.Capacity);
+
+		[MethodImpl(MethodImplOptions.AggressiveInlining)]
+		public static RecyclableArrayList<T> ToRecyclableArrayList<T>(this T[] values) => new(values);
+
+		[MethodImpl(MethodImplOptions.AggressiveInlining)]
+		public static RecyclableArrayList<T> ToRecyclableArrayList<T>(this List<T> values) => new(values);
+
+		[MethodImpl(MethodImplOptions.AggressiveInlining)]
+		public static RecyclableArrayList<T> ToRecyclableArrayList<T>(this RecyclableArrayList<T> values) => new(values);
+
+		[MethodImpl(MethodImplOptions.AggressiveInlining)]
+		public static RecyclableList<T> ToRecyclableList<T>(this IEnumerable<T> values, int blockSize = RecyclableDefaults.BlockSize) => new(values, blockSize);
 
 		[MethodImpl(MethodImplOptions.AggressiveInlining)]
 		public static T[] RentArrayFromPool<T>(this int minSize, ArrayPool<T> arrayPool) => (minSize >= _minPooledArraySize)
diff --git a/Recyclable.CollectionsTests/RecyclableArrayListTests.cs b/Recyclable.CollectionsTests/RecyclableArrayListTests.cs
index 6fcc043..f482d9c 100644
--- a/Recyclable.CollectionsTests/RecyclableArrayListTests.cs
+++ b/Recyclable.CollectionsTests/RecyclableArrayListTests.cs
@@ -161,7 +161,7 @@ namespace Recyclable.CollectionsTests
 			}
 
 			_ = list.Should().BeEmpty();
-			_ = list.Capacity.Should().Be(32);
+			_ = list.Capacity.Should().Be(20);
 		}
 
 		[Fact]
@@ -184,7 +184,7 @@ namespace Recyclable.CollectionsTests
 			}
 
 			_ = list.Should().BeEmpty();
-			_ = list.Capacity.Should().Be(32);
+			_ = list.Capacity.Should().Be(20);
 		}
 
 		[Fact]