Pros: Sensor, feel, customization
Cons: Laser instead of infrared... is that a con anymore?
I don't beat on my mice, but Razer's quality sucks compared to this. I used to think the Deathadder was the best mouse around (the sensor I still feel is superior), but I just love this mouse. It's very high quality, heavy, somewhat big and tracks like a beauty. It can be customized in so many ways.
Newegg does not have it yet, but when they do BUY IT!