If you're not running warmers, I'd stick with the Q2's. They're about the best tire you can have for not running warmers at the track. I wouldn't even mess with the superbike pro's if I could do it again.
I've ran the Diablo Super Corsa SC3's and they are a very nice tire, but I'd be hesitant to run them without warmers. That could be just me though.
-Cody