[McAttack]

I prefer the Logitech optical, simple 2 buttons + scroll. The size fits my hand perfectly. I hate the Microsoft ones, they're too big and hurt my wrist when doing extended periods of graphic work.

Seems like a lot of Logitech fans here. Although I did buy a cheapo optical mouse, some no name brand for my 2nd PC and it's pretty good too except that I find the clicking noise fairly loud.