Should I buy 03 cobra or 04 corvette z06?

[eseymourgt500kr]

03 cobra 18000-24000$ 0-60 4.5 1/4 12.5
04 z06 27500-29000$ 0-60 4.3 1/4 12.5

 

[Vegas Matt]

The Vette will destroy the Cobra at the track but doesn't have back seats. If I only had one car, I'd never have a two seater, but to each his own.