To me it is pretty cool I still use my mx1000 on the other machine. It is lighter, slides easier, and if you do alot of photoshop and gaming, the adjustable dpi button is pretty cool. But I miss my forward button. But all the positives outweights the negitives. Goes great with my G15....
Lets just say logitech OWNZ The G5 could not be a better mouse becasue of its customizable features ....Having the G5 cordless (g7) would just knock me out....
The mx518 and the 1000 series are a thing of the PAST