I need a rental for 5 days, picking up at LAX and dropping off at SAN. I have EC Exec status. I'd like something sporty (Mustang GT, Camaro SS, etc.), preferably in a convertible. Never rented from National before and don't know all the details on how the aisle system and reservations work. What class should I book to give me decent odds for that type of car at the lowest price?