i have the MX510, excellent, looks nice, fits my hand nice, and the buttons are excellent. I want a 518 soon, there pretty much the same except the MX518 has sensitivty buttons and is a little better at tracking.
im gonna get one soon. damn i love ittt its sooo coooll. shittttt awasfkldsafkl jsfdamuwhahaha . get it, its gooood. i think its the best mouse at a decent price. www.newegg.com