Once again: Lotus Exige S.
1) More agile than Z or Vette
2) Can be had barely used for much cheaper than a new C7
3) Cool factor is off the charts, looks awesome
4) Acceleration will stomp the Z and challenge the C7, if not even beat it outright
5) Way more rare than Z or any Corvette
Too bad I don't have $50k just sitting around...