currently using a gigabyte m6900, which I do like, however the left/right click is being a bit temperamental when held down (so cant ADS reliably in games).
so I really like the tilt wheel in it, on linux it consistently does the side scrolling, windows seems to be selective as to where it works. and I need the thumb buttons for forward/back.
however what I would like is a button for ring/pinky finger, so I could assign that to teamspeak and such (currently use alt, but that interferes when trying to run around jumping and such in game). so far the only ones I've seen with this are the MMO mice, but they have too many thumb buttons (use it for pitch when flying in games like planetside2)