Sound like u´re flying in to LA?
When I do, I make my way to Budget in Beverly Hills, on Wilshire blvd.
They have a great selection of exotic cars, and I always ask the manager for whatever he can give me a good deal on.
Last time, I got the new Corvette Conv. for $1000/week. Before that, I rented the MB Suv. for less, Can´t remember how much.
They got the new Camaro, and Challenger, or the SL65 AMG and Lambo...whatever fits your age and wallet.