diff --git a/Recyclable.Collections.Benchmarks/Benchmarks/IndexOf_AllItems.cs b/Recyclable.Collections.Benchmarks/Benchmarks/IndexOf_AllItems.cs
deleted file mode 100644
index 626e743..0000000
--- a/Recyclable.Collections.Benchmarks/Benchmarks/IndexOf_AllItems.cs
+++ /dev/null
@@ -1,73 +0,0 @@
-namespace Recyclable.Collections.Benchmarks
-{
-	public partial class RecyclableCollectionsBenchmarks
-	{
-		private const long MaxItemsToSearchFor = RecyclableDefaults.MinItemsCountForParallelization * 3;
-
-		public void Array_IndexOf_AllItems()
-		{
-			var data = TestObjects;
-			var list = TestObjects;
-			var dataCount = Math.Min(TestObjectCount, MaxItemsToSearchFor);
-			for (var i = 1; i <= dataCount; i++)
-			{
-				DoNothing(Array.IndexOf(list, data[^i]));
-			}
-		}
-
-		public void List_IndexOf_AllItems()
-		{
-			var data = TestObjects;
-			var list = TestObjectsAsList;
-			var dataCount = Math.Min(TestObjectCount, MaxItemsToSearchFor);
-			for (var i = 1; i <= dataCount; i++)
-			{
-				DoNothing(list.IndexOf(data[^i]));
-			}
-		}
-
-		public void PooledList_IndexOf_AllItems()
-		{
-			var data = TestObjects;
-			var list = TestObjectsAsPooledList;
-			var dataCount = Math.Min(TestObjectCount, MaxItemsToSearchFor);
-			for (var i = 1; i <= dataCount; i++)
-			{
-				DoNothing(list.IndexOf(data[^i]));
-			}
-		}
-
-		public void RecyclableArrayList_IndexOf_AllItems()
-		{
-			var data = TestObjects;
-			var list = TestObjectsAsRecyclableArrayList;
-			var dataCount = Math.Min(TestObjectCount, MaxItemsToSearchFor);
-			for (var i = 1; i <= dataCount; i++)
-			{
-				DoNothing(list.IndexOf(data[^i]));
-			}
-		}
-
-		public void RecyclableList_IndexOf_AllItems()
-		{
-			var data = TestObjects;
-			var list = TestObjectsAsRecyclableList;
-			var dataCount = Math.Min(TestObjectCount, MaxItemsToSearchFor);
-			for (var i = 1; i <= dataCount; i++)
-			{
-				DoNothing(list.IndexOf(data[^i]));
-			}
-		}
-
-		public void RecyclableList_LongIndexOf_AllItems()
-		{
-			var data = TestObjects;
-			var list = TestObjectsAsRecyclableList;
-			var dataCount = Math.Min(TestObjectCount, MaxItemsToSearchFor);
-			for (var i = 1; i <= dataCount; i++)
-			{
-				DoNothing(list.LongIndexOf(data[^i]));
-			}
-		}
-	}
-}
diff --git a/Recyclable.Collections.Benchmarks/Benchmarks/IndexOf_BestAndWorstCases.cs b/Recyclable.Collections.Benchmarks/Benchmarks/IndexOf_BestAndWorstCases.cs
new file mode 100644
index 0000000..30e2606
--- /dev/null
+++ b/Recyclable.Collections.Benchmarks/Benchmarks/IndexOf_BestAndWorstCases.cs
@@ -0,0 +1,79 @@
+namespace Recyclable.Collections.Benchmarks
+{
+	public partial class RecyclableCollectionsBenchmarks
+	{
+		private const long MaxItemsToSearchFor = 100_000;// RecyclableDefaults.MinItemsCountForParallelization * 3;
+
+		public void Array_IndexOf_BestAndWorstCases()
+		{
+			var data = TestObjects;
+			var list = TestObjects;
+			var dataCount = Math.Min(TestObjectCount, MaxItemsToSearchFor);
+			for (var i = 0; i < dataCount; i++)
+			{
+				DoNothing(Array.IndexOf(list, data[i]));
+				DoNothing(Array.IndexOf(list, data[^(i + 1)]));
+			}
+		}
+
+		public void List_IndexOf_BestAndWorstCases()
+		{
+			var data = TestObjects;
+			var list = TestObjectsAsList;
+			var dataCount = Math.Min(TestObjectCount, MaxItemsToSearchFor);
+			for (var i = 0; i < dataCount; i++)
+			{
+				DoNothing(list.IndexOf(data[i]));
+				DoNothing(list.IndexOf(data[^(i + 1)]));
+			}
+		}
+
+		public void PooledList_IndexOf_BestAndWorstCases()
+		{
+			var data = TestObjects;
+			var list = TestObjectsAsPooledList;
+			var dataCount = Math.Min(TestObjectCount, MaxItemsToSearchFor);
+			for (var i = 0; i < dataCount; i++)
+			{
+				DoNothing(list.IndexOf(data[i]));
+				DoNothing(list.IndexOf(data[^(i + 1)]));
+			}
+		}
+
+		public void RecyclableArrayList_IndexOf_BestAndWorstCases()
+		{
+			var data = TestObjects;
+			var list = TestObjectsAsRecyclableArrayList;
+			var dataCount = Math.Min(TestObjectCount, MaxItemsToSearchFor);
+			for (var i = 0; i < dataCount; i++)
+			{
+				DoNothing(list.IndexOf(data[i]));
+				DoNothing(list.IndexOf(data[^(i + 1)]));
+			}
+		}
+
+		public void RecyclableList_IndexOf_BestAndWorstCases()
+		{
+			var data = TestObjects;
+			var list = TestObjectsAsRecyclableList;
+			var dataCount = Math.Min(TestObjectCount, MaxItemsToSearchFor);
+			for (var i = 0; i < dataCount; i++)
+			{
+				DoNothing(list.IndexOf(data[i]));
+				DoNothing(list.IndexOf(data[^(i + 1)]));
+			}
+		}
+
+		public void RecyclableList_LongIndexOf_BestAndWorstCases()
+		{
+			var data = TestObjects;
+			var list = TestObjectsAsRecyclableList;
+			var dataCount = Math.Min(TestObjectCount, MaxItemsToSearchFor);
+			for (var i = 0; i < dataCount; i++)
+			{
+				DoNothing(list.IndexOf(data[i]));
+				DoNothing(list.LongIndexOf(data[^(i + 1)]));
+			}
+		}
+	}
+}
diff --git a/Recyclable.Collections.Benchmarks/Benchmarks/RecyclableCollections.Benchmarks.cs b/Recyclable.Collections.Benchmarks/Benchmarks/RecyclableCollections.Benchmarks.cs
index 82fad90..bae12f8 100644
--- a/Recyclable.Collections.Benchmarks/Benchmarks/RecyclableCollections.Benchmarks.cs
+++ b/Recyclable.Collections.Benchmarks/Benchmarks/RecyclableCollections.Benchmarks.cs
@@ -7,7 +7,7 @@ namespace Recyclable.Collections.Benchmarks
 	{
 		Add_WithCapacity, Add, AddRange_WithCapacity, AddRangeWhenSourceIsArray, AddRangeWhenSourceIsIEnumerable,
 		AddRangeWhenSourceIsIList, AddRangeWhenSourceIsList, AddRangeWhenSourceIsSameType, Contains_FirstItems,
-		Contains_LastItems, Count, Create_WithCapacity, Create, GetItem, IndexOf_AllItems, IndexOf_FirstItems,
+		Contains_LastItems, Count, Create_WithCapacity, Create, GetItem, IndexOf_BestAndWorstCases, IndexOf_FirstItems,
 		IndexOf_LastItems, LongCount, Remove_FirstItems, Remove_LastItems, RemoveAt_FirstItems, RemoveAt_LastItems,
 		SetItem,
 	}
@@ -37,7 +37,7 @@ namespace Recyclable.Collections.Benchmarks
 			RecyclableCollectionsBenchmarkType.Create_WithCapacity,
 			RecyclableCollectionsBenchmarkType.Create,
 			RecyclableCollectionsBenchmarkType.GetItem,
-			RecyclableCollectionsBenchmarkType.IndexOf_AllItems,
+			RecyclableCollectionsBenchmarkType.IndexOf_BestAndWorstCases,
 			RecyclableCollectionsBenchmarkType.IndexOf_FirstItems,
 			RecyclableCollectionsBenchmarkType.IndexOf_LastItems,
 			RecyclableCollectionsBenchmarkType.LongCount,