Summary: I bought this mouse for gaming about a year ago. It is still working great and hasn't let me down. It is on the expensive side, but well worth it if you plan to use it to its extent. Great for all around gaming. I use this to play World of Warcraft and Heroes of Newerth.
Pros: Rock solid responsiveness, smooth movement, quality software and drivers. Allows full control of inputs for both buttons and tracking speeds. Lighting schemes are customizable, from single colors to a rotating pattern, brightness is also adjustable.
Cons: High price, although the Naga Epic can often be found for under its suggested retail price. As noted by the reviewer, the button layout requires adjustment to an user's normal pattern of use. People looking for a weighted mouse may not like the feel.