Pros: First month was awkward, after that, best mouse ever. Index finger is far more mobile than thumb or arm. Space saver; great for LAN parties. Can use this on your knee! I use this for FPS games. (I'm elite; my clan is undefeated) Will never go back to mouse. Smooth continuous spinning. Will never have to pick it up set back down. Will never suddenly jump to the side of the screen. Easy to clean. Lasts a very long time.

Cons: No scroll wheel. Can’t do a quick 180 in FPS games.

Overall Review: If this had a scroll wheel, it would be perfection. If they stopped making this model, I would cry.

Pros: Hasn't completely died yet.

Cons: POST occasionally fails when powering up computer. Only recognizes my keyboard once every three times it's powered on. CRASHES THE COMPUTER CONSTANTLY! I can't play more than 5 minutes of video games before this junk motherboard fails and the computer shuts off. Manufacturer doesn't update drivers.

Overall Review: Avoid Biostar like the plague they are.