No no no... Denny has it all wrong. You really want to buy the 2-piece rotor Baer Track kit off my car, so *I* can buy the 6-piston Wilwoods.
Wilwood seems to have the quality/performance vs. price ratio down pretty good.
Other very good options that immediately come to mind would be AP Racing, Alcon, Brembo, and Stoptech, but I believe all will be priced a bit more than a similar Wilwood setup.
Troy