Cooler Master® Storm Inferno SGM-4000-KLLN1-GP wired gaming mouse.
It's got a couple side buttons and it stands much taller and a bit wider than most gaming mice I've come across. If you've got hands so large that the mouse size is an issue, I'd go with this one. It's only like 60 bucks too!
I switched to a Razer naga for the side buttons and the smaller profile as my hands are about average size.