tdrumm had bad luck with the Powerslot rotors on his old GP, rusted, warped, and pulsated like mad in less than 25k IIRC. We ended up swapping them out for some decent pads and "white box" rotors and all was well until he got rid of the car. I am a fan of cryo treating though, as I've had great luck with the cryogenically treated, slotted, Praise Dyno rotors that have been on my truck for 7+ years now.

I'll bet that they worked well for Steve-O since he's in Cali, and doesn't see the elements that we do here in the northeast