These work well to discern signal flow between my guitar pedals.

These work just fine for us in our music studio, and the different colors are a bonus as we were able to color code them for the uses we needed.

But still even if only 2 or 3 work still a good deal.

The other four work fine

All six worked for me and the tone was good enough as to where I didn't feel the need to do an a/b comparison

Green works good for surf.