I'm with Lil Bastard, give the Mini some thought.
My sister has an '02 and they are great cars! Very reliable, awesome mileage, and fun to drive. The layout uses the space well, and they are surprisingly spacious in the front. The Clubman would also be a good choice, if you don't mind the way the back looks. You would probably want an S coming from a Boxster.
I seriously considered a Mini S before I saw my Boxster.
