DanceNumberG Pro with the pixart sensor. Gonna grab a g305 lightspeed though to get a feel for a wireless mouse and see if i like it enough to invest in a gpro wireless.
I now have said g305, will probably not bother with a gpro wireless, but only because i find this mouse to be incredible, and especially at the price i got it for ($35 CAD). Tracking and response feels the same as my pixart gpro wired mouse, but with the convience of no cable. using a AA->AAA adapter to make it a touch lighter. HIGHLY recommend it.