I got the Steelseries Xai coupled with that one mouse pad they developed with it.
ThermalTake has a really nice mouse that allows a macro key and DPI adjustment. Not too expensive either! I'm using one and it's really nice.
A mouse wont make you better. I have the razor death adder, it feels great and it's super comfortable but I'm not a better gamer cause of it. Still, it is worth the money and I can recommend it.