Summary: Awesome mouse! Great deal and was in great condition. Only issue I had was that I got a dead battery which made it act funky for a while. Luckily I don't like using wireless mice for gaming anyways....
Summary: Fancy mouse, but the price I got it for was great. Not a perfect or great mouse by any means, but I like it. You have to sometimes restart the mouse in wireless mode, as the scroll button occasionally stops working, or the mouse freezes. Good customizability though.
Summary: I had been struggling with keybinds throughout my time with any game that involved them. To stay competitive and efficient, I needed something. This was that something. I heard Razers were among the best, and I played SWTOR so the visuals on this mouse are beautiful. The mouse's keypad on the side (12 buttons) takes some time to get used to. I played horrible compared to clicking the hotbars with the cursor.
Summary: The mouse is well built, well thought out, and performs better than I anticipated. If it weren't for deceptive marketing practices it would be rated five stars. As of 07/23/2013 Amazon is still listing this product as coming with a unique color crystal in-game. That's actually the reason I purchased this mouse, as opposed to one costing far less, when my old one died.
Summary: Love the mouse, feel is good, looks very cool, 12-pack of buttons is very helpful when playing MMO's. Downside is that at times there are connection issues between the receiver and mouse. a slight cutout means big screw ups on FPS games.