It is actually really nice. The large size works well with my massive hands. And has 3 click buttons ob top in addition to the scroll wheel. Can you say dedicated zoom, alternate fire, and shooting?
You can change the sensitivity on the fly (I think max is like 2,500 DPI. Not sure though) and has a few buttons on the sides as well.
Oh and that giant red thing pops out and can be replaced with weighted versions.
Plus most if not all the contact points for your hand are no slip grip.