2008 BMW 3 Series 328i 2dr Convertible (3.0L 6cyl 6M)
Upgraded from a 2003 Z4 to the 2008 328 Cabriolet. No regrets whatsoever. Wanted a bit more room than the Z4; and the hardtop convertible for more security, less maintenance, and better sound and cold insulation. For about $6k difference in price, couldn't see the justification for the 335; the 328 has plenty of power.
Owners manual not a well written as it could be. Could not program the garage door opener with the BMW instructions, had to use the instruction from our '03 Chevy Suburban which was written much more clearly. Maybe the German-to-English transaltion jumbled the instructions ?