I'm using a Mad Catz MMO 7 right now, and it's been okay. Very soon after getting it I noticed it seemed really hard to get a good grip on, and I took to using it without the right side attached so that I could get a better grip around the side with my ring finger. I also removed all the possible weights, including the part which is used to keep the weights on, as I prefer a light mouse. I use a claw grip on mice.
I've been thinking about getting another mouse, and the Steelseries Sensei is what I've been looking at. What're the differences between the normal, RAW, and MLG versions? I would like to have a plastic surface for the mouse, which I think the normal version is metal? I see RAW is plastic, but what is the MLG version?
I generally play MMO, FPS (playing CS:GO is one of the reasons I'm looking at a new mouse, because I feel this is where the MMO 7 is at it's worse), and whatever other game catches my eye.
I'm open to other suggestions as well. I don't want a wireless mouse, and I don't really have a budget.
EDIT: I have tried a Logitech G500 and I thought it felt really cheap and didn't really like it, in case that gives an idea to what I like.