I have recently replaced my warped rotors with cryo treated rotors from frozenrotors.com(Diversified Cryogenics). So far they are working well. I used Hawk performance street pads. The system took about 1000 miles to break in and start grabbing well. It is now much improved. No sign of warp so far and much better braking. No shimmy either. The maunfacturer claims that most of there sales are to folks who track and race their cars. They claim that they rarely warp even under those severe conditions. They are pricy the fronts are $147 each and the rears are $125.

Tom