My first hand experience with Autospecialty Power Stop cross drilled rotors was poor, actually scary. Both front rotors sheared the mounting hats during a high speed stop. I had done aprox 8-10 days of track lapping sessions plus 6 months of street driving, maybe 10k total miles. Had to avoid a car pulling in front of me and busted both of em. I was using KVR pads at the time. I still have the rotors if anyone wants to see the damage.
