I have been using the CM Storm Inferno for a few years now, great mouse. It has superb tracking compared to other mice I've used. The software is also pretty good for dpi tweaking and profiles. The form factor is similar to that of your previous mouse, and it does have plenty of buttons (including the side buttons) you can use for mmo's and web surfing. I'd recommend it, but it can be hard to find nowadays. This is the best price for a new one I could find.