I've got Rotor Pro's cross-drilled and slotted on all four corners, and stock pads still at 57k. I switched mine just as soon as I got home from getting the judder fixed. So I've basically got a new set of rotors to go back on if anything ever goes array with these, but so far, so good. Normal driving, they feel like stock, but if I stand on them, they'll throw your ass threw the windshield. My stock ones never felt like that, even if I stood on them with both feet.