Eradispeed?
I use a full racing pad on them now and they seem to be holding up pretty well. No cracks or anything. Although I'm constantly removing pad material from the cross drilled holes whenever I change from skinnies to my street wheels.
The road race guys all use an OEM stock rotor (not the chinese knock off) with pads. Figure on replacing your rotors after two days of flying around Road America if you use your brakes heavily instead of counting on engine braking to do most of the job.






