Link to mouse: http://www.ebay.com/itm/Intel-USB-Wired-Gaming-Optical-Mouse-800-1600-2400-Dpi-7-Buttons-PC-Laptop?item=320855055791&cmd=ViewItem&_trksid=p5197.m7&_trkparms=algo=LVI&itu=UCI&otn=4&po=LVI&ps=63&clkid=6802046182590625541
The mouse works wonderfully (if thats a word ). I previously had an MX518 and I was also using my friends Razer Naga for a while and this mouse seems alot more comfortable to me. It also has adjustable weights at the bottom and has a button to change the dpi. It can switch between 3 dpi settings (800, 1600, or 2400). I use 1600 and 2400 for sc2 while using 2400 for everything else. It also has a media button that on first push brings up windows media player, changes the mouse scroll button into a pause/play button (I use this feature for replays in sc2), and changes the dpi switch into an inst-browse button as it automatically brings up your preferred internet browser. I can honestly say that this mouse feels like a MX518 with a slightly higher dpi, adjustable weight, extra media buttons, and $20 cheaper.
I can also say that it doesnt have the same cheap feel that alot of the gaming mouse around this price range does ($15-$30). The mouse is very solid and it also has a very accurate optical sensor. I would recommend this mouse to anyone with big hands that like heavy, accurate mice that have multiple uses and are on a budget.
EDIT: Title should say