diff --git a/src/RustyOptions.Benchmarks/Config.cs b/src/RustyOptions.Benchmarks/Config.cs
new file mode 100644
index 0000000..352d1e9
--- /dev/null
+++ b/src/RustyOptions.Benchmarks/Config.cs
@@ -0,0 +1,15 @@
+using BenchmarkDotNet.Columns;
+using BenchmarkDotNet.Configs;
+using BenchmarkDotNet.Diagnosers;
+using BenchmarkDotNet.Reports;
+
+namespace RustyOptions.Benchmarks;
+
+internal sealed class Config : ManualConfig
+{
+    public Config()
+    {
+        AddDiagnoser(MemoryDiagnoser.Default);
+        SummaryStyle = SummaryStyle.Default.WithRatioStyle(RatioStyle.Percentage);
+    }
+}
\ No newline at end of file
diff --git a/src/RustyOptions.Benchmarks/FirstOrNone.cs b/src/RustyOptions.Benchmarks/FirstOrNone.cs
index de408ba..32d1362 100644
--- a/src/RustyOptions.Benchmarks/FirstOrNone.cs
+++ b/src/RustyOptions.Benchmarks/FirstOrNone.cs
@@ -5,14 +5,17 @@ namespace RustyOptions.Benchmarks;
 
 [GroupBenchmarksBy(BenchmarkLogicalGroupRule.ByCategory)]
 [CategoriesColumn]
+[Config(typeof(Config))]
 public class FirstOrNoneBenchmarks
 {
+    const int SIZE = 1000;
+
     private readonly int[] intArray;
     private readonly List<int> intList;
 
     public FirstOrNoneBenchmarks()
     {
-        intArray = [.. Enumerable.Range(1, 1000)];
+        intArray = [.. Enumerable.Range(1, SIZE)];
         intList = [.. intArray];
     }
 
@@ -46,36 +49,36 @@ public void FirstOrNoneListOld()
         _ = FirstOrNoneOld(intList);
     }
 
-    private static bool IsEven(int x) => (x & 1) == 0;
+    private static bool IsHalfway(int x) => x == SIZE / 2;
 
     [BenchmarkCategory("Predicate"), Benchmark]
     public void FirstOrNoneWithPredicateEnumerable()
     {
-        _ = IntEnumerable().FirstOrNone(IsEven);
+        _ = IntEnumerable().FirstOrNone(IsHalfway);
     }
 
     [BenchmarkCategory("Predicate"), Benchmark]
     public void FirstOrNoneWithPredicateArray()
     {
-        _ = intArray.FirstOrNone(IsEven);
+        _ = intArray.FirstOrNone(IsHalfway);
     }
 
     [BenchmarkCategory("Predicate"), Benchmark(Baseline = true)]
     public void FirstOrNoneWithPredicateArrayOld()
     {
-        _ = FirstOrNoneOld(intArray, IsEven);
+        _ = FirstOrNoneOld(intArray, IsHalfway);
     }
 
     [BenchmarkCategory("Predicate"), Benchmark]
     public void FirstOrNoneWithPredicateList()
     {
-        _ = intList.FirstOrNone(IsEven);
+        _ = intList.FirstOrNone(IsHalfway);
     }
 
     [BenchmarkCategory("Predicate"), Benchmark]
     public void FirstOrNoneWithPredicateListOld()
     {
-        _ = FirstOrNoneOld(intList, IsEven);
+        _ = FirstOrNoneOld(intList, IsHalfway);
     }
 
     private static Option<T> FirstOrNoneOld<T>(IEnumerable<T> items)
diff --git a/src/RustyOptions.Benchmarks/LastOrNone.cs b/src/RustyOptions.Benchmarks/LastOrNone.cs
index b1589a4..6956c61 100644
--- a/src/RustyOptions.Benchmarks/LastOrNone.cs
+++ b/src/RustyOptions.Benchmarks/LastOrNone.cs
@@ -5,14 +5,17 @@ namespace RustyOptions.Benchmarks;
 
 [GroupBenchmarksBy(BenchmarkLogicalGroupRule.ByCategory)]
 [CategoriesColumn]
+[Config(typeof(Config))]
 public class LastOrNoneBenchmarks
 {
+    const int SIZE = 1000;
+
     private readonly int[] intArray;
     private readonly List<int> intList;
 
     public LastOrNoneBenchmarks()
     {
-        intArray = [.. Enumerable.Range(1, 1000)];
+        intArray = [.. Enumerable.Range(1, SIZE)];
         intList = [.. intArray];
     }
 
@@ -46,36 +49,36 @@ public void LastOrNoneListOld()
         _ = LastOrNoneOld(intList);
     }
 
-    private static bool IsEven(int x) => (x & 1) == 0;
+    private static bool IsHalfway(int x) => x == 500;
 
     [BenchmarkCategory("Predicate"), Benchmark]
     public void LastOrNoneWithPredicateEnumerable()
     {
-        _ = IntEnumerable().LastOrNone(IsEven);
+        _ = IntEnumerable().LastOrNone(IsHalfway);
     }
 
     [BenchmarkCategory("Predicate"), Benchmark]
     public void LastOrNoneWithPredicateArray()
     {
-        _ = intArray.LastOrNone(IsEven);
+        _ = intArray.LastOrNone(IsHalfway);
     }
 
     [BenchmarkCategory("Predicate"), Benchmark(Baseline = true)]
     public void LastOrNoneWithPredicateArrayOld()
     {
-        _ = LastOrNoneOld(intArray, IsEven);
+        _ = LastOrNoneOld(intArray, IsHalfway);
     }
 
     [BenchmarkCategory("Predicate"), Benchmark]
     public void LastOrNoneWithPredicateList()
     {
-        _ = intList.LastOrNone(IsEven);
+        _ = intList.LastOrNone(IsHalfway);
     }
 
     [BenchmarkCategory("Predicate"), Benchmark]
     public void LastOrNoneWithPredicateListOld()
     {
-        _ = LastOrNoneOld(intList, IsEven);
+        _ = LastOrNoneOld(intList, IsHalfway);
     }
 
     private static Option<T> LastOrNoneOld<T>(IEnumerable<T> items)