Light, comfortable, accurate, fancy glowy colors. If it's comfortable in your hand, there is no reason not to buy this.
I have large hands and use a finger tip grip; This is a big mouse and I love the feel of it in my hand; The rubber texture is nice and makes it very easy to pick it up during fast paced FPS games.
I had a couple of failures and had to exchange it for another one; Could have been a problem with my motherboard's USB port, but not sure