2007 BMW 3 Series 328i 4dr Sedan (3.0L 6cyl 6M)
Amazing handling! This is like driving a true sports car, but it has 4 doors and seating for 5. Mine has the sport package, which firms up the ride, but makes for great handling and flat cornering, and still is pretty smooth. I thought that I would miss the power of the 335, but the 328 is pretty fast, and gets much better mileage than the 335 (I've gotten between 22-30 mpg so far). I love the sport mode with the auto transmission; shifts happen faster and hold the gear longer.
Sport package (handling), sport mode, the sport seat, great combination of flat cornering and smooth ride, looks.
Back seat a bit cramped (but at least it seats 3), manual sport seat is hard to adjust (get the power seat if at all possible),