I too run full race 1200F pads and prefer plain jane Zimmerman rotors. Maximum surface area for maximum heat soak and low price. My brother runs Power slot rotors which are on sale at Tire Rack now for 1/2 price. Both are good choices if you use ALL of your brakes at the track regularly. The Zimmermans were good enough for both PCA regional and Zone TT championships as well as 6 PCA track records in class last year.
Unfortunately "best brand" is entirely subjective so responses will probably be as varied as snowflakes.
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2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
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