I think people are missing the point about the interior. Obviously there has to be a tradeoff. The performance of the Corvette eclipses that of the M3, whereas the interior of the M3 is better than the Corvette.
2011 BMW 135i - BSM
2006 Mazdaspeed 6 GT, 2000 BMW 323ci, 2003 Evolution VIII, 1995 Nissan 240sx w/ SR20DET