i'm using a Logitech MX Laser cordless mouse, myself. 8 buttons, baby! Though, the packaged software doesnt seem to recognize the tilt mousewheel. I don't know about anyone else, if they've used one, but these ergonomics arent great for gaming. I find the mouse is too high in the middle, and it cocks your wrist back to a point that it hampers mobility (and hurts, dammit)
for FPS, i go back to my 3-button logitech optical
