Molds really well to my average to large sized hands.Real light. Maybe too light for some people. It's my main mouse now. Enjoying it alot.

I wanted a straight forward wired mouse that did all the basics, was nice and accurate, lightweight, fast and comfortable – this mouse is perfect. I have an iMac and find the Mighty Mouse cumbersome and not accurate enough whenever I have graphics work to do, the M6580 is a breeze to use. I would give the Gigabyte mouse a higher score but as it's a Windows mouse there are two buttons on the side which don't work with Apple (they are for navigating forwards and backwards through web pages).

I've only been using it for a week or so, but so far it's worked perfectly. My only and very minor issue is that it doesn't keep your DPI setting after the computer's been turned off, so I have to set the DPI again every time I start it up – but I'm happy to put up with that for a quality mouse like this one.