If you play first person shooters, get the M60!!! I has weights at the bottom so you can make it as light or as heavy as you want it. It is a lot less confusing. It has a sniper button. I can keep rambling on about this mouse. But if you are more into World of War craft and MMO games. I would choose the m90. 2nd choice would be the naga. Then the last choice would be the mamba.