diff --git a/milabench/config.py b/milabench/config.py
index 4f246561c..2b0f15299 100644
--- a/milabench/config.py
+++ b/milabench/config.py
@@ -108,6 +108,10 @@ def build_matrix_bench(all_configs):
 
     for name, bench_config in all_configs.items():
         for k, v in expand_matrix(name, bench_config):
+
+            if k in expanded_config:
+                raise ValueError("Bench name is not unique")
+
             expanded_config[k] = v
 
     return expanded_config
diff --git a/milabench/report.py b/milabench/report.py
index 5d7d32057..80df4eca2 100644
--- a/milabench/report.py
+++ b/milabench/report.py
@@ -128,7 +128,7 @@ def text(self, x):
         if not self.stdout:
             return
         if isinstance(x, DataFrame):
-            self._text(x.to_string(formatters=_formatters))
+            self._text(pandas_to_string(x, formatters=_formatters))
         else:
             self._text(str(x))
 
@@ -300,9 +300,39 @@ def _score(column):
     out.finalize()
 
 
+def pandas_to_string(df, formatters):
+    """Default stdout printer does not insert a column sep which makes it hard to retranscribe results elsewhere.
+    to_csv does not align the output.
+    """
+    from collections import defaultdict
+    columns = df.columns.tolist()
+
+    sep = " | "
+    lines = []
+    col_size = defaultdict(int)
+
+    for index, row in df.iterrows():
+        line = [f'{index:<30}']
+        for col, val in zip(columns, row):
+            fmt = formatters.get(col)
+            val = fmt(val)
+            col_size[col] = max(col_size[col], len(val))
+            line.append(val)
+
+        lines.append(sep.join(line))
+
+    def fmtcol(col):
+        size = col_size[col]
+        return f"{col:>{size}}"
+
+    header = sep.join([f"{'bench':<30}"] + [fmtcol(col) for col in columns])
+
+    return "\n".join([header] + lines)
+
+
 _formatters = {
+    "fail": "{:4.0f}".format,
     "n": "{:.0f}".format,
-    "fail": "{:.0f}".format,
     "std": "{:10.2f}".format,
     "iqr": "{:10.2f}".format,
     "perf": "{:10.2f}".format,
@@ -314,8 +344,9 @@ def _score(column):
     "std%": "{:6.1%}".format,
     "sem%": "{:6.1%}".format,
     "iqr%": "{:6.1%}".format,
-    "weight": "{:4.2f}".format,
-    "peak_memory": "{:.0f}".format,
+    "score": "{:10.2f}".format,
+    "weight": "{:5.2f}".format,
+    "peak_memory": "{:11.0f}".format,
     0: "{:.0%}".format,
     1: "{:.0%}".format,
     2: "{:.0%}".format,