I hired a roadster for a week and I actually loved it. I think it looks fantastic with the hood up or down and there's nothing to beat driving with the hood down, sun out and among tall buildings to the soundtrack of that fantastic engine. Mind you, the fact that I was driving it around Monaco might have something to do with it :-D
That said, I bought a coupe. The only reason really was the price - just couldnt streatch to a roadster. However I was also concerned about security if I left it anywhere overnight.
Certainly if anyone offered a swap of a roadster for my coupe I'd jump at the chance.
Still wouldnt have any other car than a Z though.
Chris