I think I'm deciding to go with the cooper Zeon RS3-A, for two reasons...
1) Winding road put the RS3-S head to head with the Michelin PS2's, and it held it's own pretty well. Aside from the review linked below, I've read tons of good testimonials on the coopers, both summer and all-season varieties of the RS3's. Didn't know Roush used coopers as stockers for their mustangs, either.
http://www.windingroad.com/articles/...3-s-and-rs3-a/
and 2) ZEON!! For you gundam fans, Zeon is a principality inhabiting space colonies around the earth... and their symbol is the red thing in my avatar, which is from a pic of my car (its a sticker on my rear windshield). So yeah, because I'm a nerd, the RS3-A's are the winners.
Thanks to all who voted in the poll!