I don't know if anyone reads the follow-ups to these, but I went out and test drove a MS3 yesterday, and I ended up buying one this morning!
Thanks again for the tip to check it out, I hadn't really thought about it; and it was the perfect solution to my problem - Still fast enough to be fun, but I can also put things in it if I need to pick someone up from the airport or go buy a chair or something.
I'll be out driving!