Lightweight
No extra buttons on the side
Comfortable
Shiny
Weaknesses:
No profiling.
The scroll wheel speed on the software always resets.
Summary:
Been using this mouse for over a year in games such as CS:S, BF3, COD4, and TF2. Its size and weight makes it extremely easy to maneuver, which is what you need in FPS games. There are no extra buttons so you don't have to worry about hitting anything accidentally. It still works like new and is definitely worth the price.