Talked to derrick @ tire rack. I explained that eventually I want to go with a dedicated wheel and tire set for my SS. They still have no wheels for us but he anticipates that by spring we should see something.
He said he has driven both the Contiextremes and the RE960's on ice and snow, and found that the 960 was a bit better in the white stuff vs the conti. "wet traction, road noise, and tread life are all considerably better than the continental"
I have a 20 mile commute each way so I was willing to fork over for a quiet tire that offers the best performance and wear.
I understand Some people may opt for the extreme contacts with the offbrand navigation and 160 dollars less. But your car is only as good/fast/safe as the rubber she wears