I´d buy the Merc if i were you. The Porsche says try hard a bit and the BMW 320 will give you the dreaded `turk` look. The Z3 as a car is pretty cool but a bit gayish.
Book - Around the World in 80 Girls - The Epic 3 Year Trip of a Backpacking Casanova
My new book Famles - Fables and Fairytales for Men is out now on Amazon.