Just upgraded from my trusty g602 to the g604. Buttons aren't nearly as clicky and tactile as the g602, but the damn scroll wheel is phenomenal, I can't get enough of it.
Logitech G602 Wireless Gaming Mouse Review/Unboxing | ***Review of Logitech G602 Wireless Gaming Mouse, equipped with 11 programmable/customizable buttons (including Right, Left and Middle Click) Compatible... | By TECH Daydream | Facebook