I used to be interested in getting a wireless mouse for gaming.
I read all the reviews asked friends and read more reviews etc. Read white papers bla bla.
Logitech g700 got bad reviews
mamba is excellent
rat mouse got good reviews for wired not sure for wireless but look awesome
sidewinder is great value for money
but remember dont play fps coz response is what u loose. If u decide to get a mouse the mouse must have a 1000mhz poling rate so that is has similar response to a wired mouse. Battery time on mice depends as well
I also would recommed you rather get a wired mouse for gaming the response is better there is no lag, no software or radio interference... Wireless mice tend to act up alot, especially if you have a lot of frequencies running in your home...
I have the Microsoft X8 and i also have a wired mouse (gigabyte M8000x awesome mouse) as a backup. I have tested both mice on COD Black Ops (nick: supersweet) i only feel a slight difference in performance. maybe 10 or so kills per game difference between the 2 mice average depending on game type. Thinking about getting the Gigabyte M8600 which is also a wireless seen as though the M8000 is so good in my opinion.