I used to own a 2004 coupe, but sold it and now have a 2006 roadster.

I believe it is a matter of personal preference on which design to buy. I went with the roadster because I like the roof line of the car better with the soft top. While I like the fastback look of the coupe, I prefer the look of the roadster.

The XFire has such a strong body design that the roadster is more akin to the coupe than many "convertible" car models. There isn't much flex in the body and the car is as quiet as the coupe.

And then there is the obvious top down mode of the roadster that appeals to me. It takes roughly 30 seconds to raise or lower the soft top.