G700 wants a talk with you.Doesn't really matter if it's as fast as other fast gaming mice, there's still the battery-issue. Having your mice do random shit or just go slower because the batteries are low or having it completely die because you didn't replace the batteries earlier can cause some mayhem in online gaming! I used to have a wireless gaming mouse, now I have a Sensei. I will never go back to wireless.
Edit: Seems like it does have a charger-thingy, so I guess my main issue with wireless mice doesn't apply to this one. But for extended periods of time (New launches and LAN-parties) it's still an issue.