While the RAT 9 is probably the sexiest mouse I've ever seen... you can pick up a Razer DeathAdder for half the price, although it is corded. And a Razer Mamba for about 150 but that is still a 5.6k dpi feature rich gaming mouse. I've had a death adder for quite some time, and its pretty nice, some of the plastic looks cheap but the performance is nice and it feels solid in your hand.
I'd advise against a logitec wireless mouse though, while the mice themselves are nice quality... the usb adapters are really bad quality and tend to break if something knocks up against them.