i use a razer lachesis, i like it a lot..it's light and extremely accurate. it's laser and a lot of people swear against it. however i like the versatility, the macro capabilities, and how it conforms to my hand the way i hold a mouse. 9 buttons, 2 shy of the logitech g9 (i think) which has mousewheel left and right, the lachesis does not. the logitech mouses are too much of a "half circle" for my liking, and don't work well with the way i hold the mouse...so not really up my alley, but may suit you better.
