I only buy the most expensive mice - and this one is up there with the RAT Pro 9.
*Maybe* the best mouse I've had yet?
Haven't used the wireless functionality too much, but the battery seems to be outstanding.
In CoD, the light weight makes for easier multi-kills.
One star knocked off for price only. It was about 150GBP for me.
This is light years ahead of my old mouse. Glides like a feather, nice clicks and good middle button action. I have large hands but it's very comfortable and a decent size for a desktop mouse.
Software is ok and I recommend turning off the illuminated logo to save battery. When charging it mounts magnetically to the dock and is fast.
The mouse itself can be turned off and there is a dpi switch to easily change the sensitivity. Both of these are on the base of the mouse.
Finally it's an ambidextrous mouse and has two buttons on both sides so us lefties are fully supported.