I drove the car with the near new 712s before it went under the knife. It had serious problems, and even on the car with a motor that barely ran, 'powering' through a corner they let loose quite easily. I've heard lots of good things about the ES100s. You should treat my TT rears with love and good tires :)
Kez
The list: 1997 T-66 Supra 2003 Porsche 911 Turbo 2004 GSX-R