I've tried many different rotors on the front of my NSX. Slotted, Drilled, Slotted and Drilled, and the best ones have always been the standard OEM. Since there isn't enough cooling to the brakes, I have warpped and cracked every rotor beside the OEM at the track. Since I have switched back to the OEM's with pads from Cobalt, I have no problems.
Althought slotted and drilled look great, they aren't as good at withstanding the abuse on the track.