As a roadster owner, I would agree its not the best looking thing with the roof up, but its the buisness with it down! Gives you the full sound of the car too!
Only thing I would say, if your buying second hand, check the roof works, then check it again, then a third time just in case!
Have to say though, if you dont like the wind in your hair get a coupe! I have the roof down on any dry day, think thats the only attitude to have with a roadster!!