Summary: This is my second time buying this mouse; not because it broke. A few years ago I gave away this mouse to a friend when I got a new gaming mouse. Now I'm switching back to this mouse because it's better for fps games. When gigabyte says that it's for fps games, they were not kidding. The only con of this mouse is that if you were to using it for switching weapons with the wheel, you would have a difficult time.
Summary: This was an upgrade for me, and I'm liking it a LOT - been using it heavily for MMORPG games (not shooters) for several months now and the performance is flawless. It did take a week or so for me to get used to the thumb groove (it actually hurt my thumb for awhile - I'm just not used to having anything touching that surface - I've used Microsoft Intellimouse opticals for nearly a decade now) I would recommend this all day long to just about anyone.
Summary: I used this mouse with a steelseries qck thick, and I eventually gave this mouse to my mom, who is still using it without a problem. It is an excellent mouse for the price. Highly recommended buy.
Pros: inexpensive, decent build quality, good sensor