I use this mouse for desktop gaming and it's absolutely perfect. I don't notice problems that other users are reporting in regards to the mousewheel. What is the case is that the mousewheel does "big hops", but you're getting used to it incredibly quickly, in the course of a few days.
I'm using this mouse absolutely not for gaming and have no complaints about it. I'd say that the mouse wheel has soft indents so it's easy to scroll. Personally, I love it so.