Summary: I tried out the logitech G400, and this Gigabyte mouse just feels better. It is very comfortable in the hand, and the wheel mouse works great and feels so much better than the G400. My game also improved so much this mouse.
Summary: I liked the feel of the mouse, but it wouldn't track correctly on any surface I tried. This seems to be a consistent problem with optical mice. I would recommend picking up a laser mouse instead.
Summary: Bought 2 of those. the first one did not work at all, second one, the wheel was stuck and did not move at all. Got an exchange for another one (same model) it worked fine for 3 weeks and after that the button on the left just stayed inside the mouse.... can't used those button anymore. Put 15$ more and buy something decent instead.
Pros: Good Size, beautiful mouse
Cons: Cheap made, you will never know when it will break... Cheapest plastic ive ever seen