I had the HP rotors from www.racingbrake.com
and it was great on my WRX.. I know I talked to Ken last year about the development of the same rotors as well because I love these rotors a lot especially bang for the buck. Here are the other variations that RB has for their customers:
I really need something that is OEM sized due to the fact of SCCA Solo2 rules that I am looking at.