I probably wouldn't get one, if only because it's got no room to put stuff. the price tag is higher than you would think, also. I can't remember the exact number. The fuel efficiency is way good, and i think its attractive in a quirky way.
I have also been a fan of tiny cars with less horsepower for a long time. In the end, it is the number of horses per pound and suspension that make the difference, not just raw power.
I WOULD get the sport model that smart makes.
the roadster is a nice looking car with good milage. it has room, but is a little underpowered. but a little work can fix the power issue, eh?
edit: judging by the website, the roadster is still available