The ZR1 has to work to hold it's own against the Nissan GT-R, and while I am a fan of the GT-R (and Nissan in general,) I wouldn't go so far as to call the GT-R a super car.
(Holy crap, I just made an indirect proof about cars.)
Anyway, my money goes with the good 'ol Camaro SS. I'd love the chance to build one someday. Who knows, might actually happen, too.
I think that the new Corvettes should be scratched as muscle cars.
I say this on the basis that ANY car that can go around corners instead of through them should be scratched as a muscle car. The whole point is to go very fast in a straight line and die very quickly.