I love this mouse! I got when I a new desktop a few months back because I hate how small the standard mouses are. This mouse actually fits my hand comfortably and it works very well for gaming. For reference, I'm a female with medium sized hands. Not to mention it looks pretty darn cool! There is no way to turn off the lights without unplugging it from the desktop though. This mouse lights up pretty bright, so if you are light sensitive and have your computer in your bedroom, it may cause issues for you when you're trying to sleep. I am light sensitive but luckily I have my desktop(and my mouse) in a rolltop desk, so I can't see the constantly changing, bright light of the mouse when I'm trying to sleep.
HOWEVER, I have recently come across a potentially fatal issue with this mouse. It seems as if it is having random technical issues, and sometimes will point up and spin for a second or two. This has happened twice. It's not that big of an issue, unless you're playing a game. Which is what I was doing both times that it happened. It's quite disorienting when you're in a game to have your mouse suddenly make you look up and spin and can easily cost you the whole game! I'm hoping those two times were just flukes, but if it keeps happening I'll be forced to replace this mouse with one that doesn't randomly spin. Pretty useless as a gaming mouse if you can't trust that it'll always do what you want it to do.
Will update this review if I end up replacing the mouse or if the spinning stops.