Those are actually the other two Adrenaline cars I've rented. The Corvette is more performance-oriented, with a slightly more powerful engine and better handling; however this is at the cost of high-tech goodies like the HUD and any sense of practicality The Challenger, while less powerful and slightly larger, I felt is a bit more true to its form as a classically-derived muscle car.

With that said, I really liked the Challenger too, but I would give the Camaro a slight edge. If a Corvette was available though and it was just me traveling...

-J.