I've had a few fretless Stingrays, all with Pau Ferro boards and found them all well suited to the job. I don't think it looks as cosmetically nice as ebony but that's a minor point. One thing I did note though is that it's a bit on the brittle side, I had the board resurfaced on a SR5 as it had a little wear and when the nut was removed a bit of the board at the back of the nut popped off and had to be glued back into place.