Want something with a native polling rate of around 500+ that requires no windows hack stuff.

Similar shape to Mx518, pref a little smaller/lower if poss, two thumb buttons are needed, as a bonus, I would like the one on top too as I still use arrows so need the binds on the mouse.

Has to be better than the 518, bought the g5 when it first came out in 05 and did not rate it, so went back to 518 ever since.

Any ideas on what I should replace it with G400/G1?

Been out of mouse loop for loooong time.

Thanks