Pros: When it works, it works very well. Great for gaming and work use alike.

Cons: The Deathadder has known issues with some motherboards, including ASUS. Unfortunately, I didn't know this until my mouse broke and I called Razer's tech support. They were very helpful but informed me that they haven't figured the problem out yet. Meanwhile, they did issue an RMA immediately and I'm hoping to have a replacement soon (there's a two-year warranty, so they'll keep sending me a new mouse when mine breaks during that time).

Overall Review: I'm hoping they resolve the issue soon. When it works, it's a very good mouse. Go to Razer's website before you buy and check to make sure your motherboard isn't one of those affected.