This is an excellent mouse, it moves really accurately and the software allows all sorts of customisations. The slightly rubberised surface works well and it feels much nicer than a 'normal' mouse. If you're left handed like me it's perfect because it's symmetrical (don't even think about trying a r.a.t, they don't work at all for lefties). The lights are fun but can be turned off if you're not into them. Oddly, McAfee reports the driver install as a Trojan, which it isn't.