Look up RATs, i have the cheapest one of the series, ive used it most days for 2 years for average of 8 hours at least, works perfectly fine, looks uber bad-ass, feels amazingly comfortable, has changeable sensitivity buttons on the mouse, two programable buttons which ive set up to automatically rapid click, plus a button which changes what the programmable buttons do, so you can have different settings for different games. Keep in mind that is the cheapest one they sell. The most expensive one is wireless, a crap ton more sensitive (if you set it to be of course), has adjustable weights, replaceable 'shell', with different feel, a sniping button (basically sets the sensitivity to lowest for sniping), wireless with battery charger, horizontal scroll bar. And there's probably more, haven't looked it up in a while.
Of course, its rather expensive for the newest one.. I got mine for £40 i think, but you could probably get it on ebay for half that.
