I've got a Z4 roadster and I love it. I've never had a convertible before so this is quite a thrill.
But you know something? When I look at the Z4 coupe, especially a silver one, I can't help but think of the classic Aston Martin DB5. Its certainly a classic look for a great sports car. If you get one and the dealer has an old guy named Q who wants to explain the features of the car, do pay attention.
Huzz