Well, we bought a roadster, as it was a replacement for the missus car, which was an MX5, we just couldnt bear to be without the fun of top down motoring in the summer.
There would, for us, always be that moment in the heat of summer, even though we were in a 350Z, that we would look across to the convertible xr3i or 206, and think to ourselves - damn, wish we had the convertible now.
I have to agree with others though, with the top up, it most certainly hasnt got the looks of the coupe, but with the top down, its just great.
We took the coupe for a test drive, but always wanted a roadster, and bought a roadster without even having driven one. The funniest point for me is that due to the rake of the rear window on the coupe, and the almost vertical position of the window on the roadster, I actually find that the visibility is better in the roadster than the coupe. The rear quarter though is another matter.
Both myself and the missus have questioned our decision to go for the roadster, usually on days that it has rained, but then again on days like the wales drive out and other meets, we couldnt have been happier with our choice.
The only thing that I dont like, is that without some form of kit or spoiler, the bum of the roadster looks (and is) very big. So thats on the agenda to fix by way of a spoiler of kit at some time.
Only you will be able to make the decision, but my advice would be to try and get a test drive of a roadster when you have the chance to put the roof down for a while, perhaps on a sunny day (hard to find now).