I would not be persuaded by over exagerated drilled/slotted rotors, or even known name brand ones.
I use 30$ AdvanceAuto rotors on my GT, coupled with Hawk HPS+ pads. The rotors are in stock, and have a limited warranty on them agains warping. I use my car for a few daily driving trips, buts mostly and AutoX car.
Without a sponsor or something of the nature, I cannot see spending close 100$ per per rotor for something that will generally not be used to its full potential. Granted, if your hot lapping a good road course, im sure the ventilation will help and what not......but for street driving/autox, you cant go wrong with a 30$ Advance Rotor.
I mean, you could buy 3 sets of the Advance rotor, compared to one set of the big name brands, and technically your not "supposed" to turn a drilled/slotted rotor as well.
Food for thought...