The 95Q isnt switched, meaning you dont have to press down firmly on it to get it to start...you can ease into it real nice like.
Its also got a Q knob to where you can adjust the treble...as well as boost knob(upto 15% gain) thats complemented with a red push botton on/off switch thats easily kicked on with your big toe.
But to be perfectly honest with you I dont really know too much about...I really looked for a good compairison review or write up on Wahs...but to my surprise there isnt any kinda buyers guide for all the many similar models.
I will say this though, one of my friends has the 95Q and onther has a passive Wah...the guy with the 95Q never seems to have any issue, while the passive guy has to prectically jump up and down to get his workin and when his is on is really ON...I know his pedal needs an overhaul, but I think its great cause Ive seen the worst case scenerio.
[edit]BTW, this is the most informative link I found, but still leaves much to be desired as far as compairisons.
www.jimdunlop.com Wahs