I own the 535Q, never tried the 95Q. The 535 is more versatile than your average wah-wah. It can go from a snarling, in-your-face sound to a pleasant, subtle wah with a simple turn of the "Range" dial, or by tweaking the "Gain" and "Q" knobs. Not sure what functions the 95 has, but I believe it is similar to the 535.

That being said, if all you want is a wah, you can get a cheap CryBaby or Vox reissue and it will make wah-wah sounds that you will find useful. Sometimes I feel that my $250 CAD 535 was a bit much.