no.
opticals are best for games. MUCH MUCH MUCH more precise
smoother. eaiser to use. never need cleaning
there was some problems with opticals in games when they were first being made at the start.
they've long since fixed such issues.
the one i use now. NEVER had a problem with in any game ever. its never twitched, its never gone off track. its been perfect.
Logitech Duel Optical. (2 finger buttons, scool bar/button. and a thumb button)
the one im getting for chirstmas .... Logitech MX500 (2 fingerbuttons, scrollbar/button, button above scroll bar, 2 buttons below scroll bar, and 2 thumb buttons
)
i prefer logitech over anything else. never had a problem with anything they've made. hate the MS mouses.
and i hate Cordless mice, no point in em, always right by the computer.......... Batteries run down. when batteries get low, mouse will start going funny untill batteries get repalced. just not worth getting a cordless