About 2 weeks ago I bought an expenisve logitech 1 : (
http://www.logitech.com/lang/images/0/15.gif)....as Major Pothead sed "I recommend the one that is not wireless cuz the wireless one has trouble picking up slight movements such as sniping and stuff" I agree with him...
I soon took that mouse back 2 get this 1 : Mouse Logitech Optical PS2/USB :
http://www.mercadolivre.com.br/org-img/previ ew/MLB/4652617_7326.jpg
My advice : dont get cordless mice..they r 2 heavy coz of the batteries for gaming