2008 BMW 5 Series 535i 4dr Sedan (3.0L 6cyl Turbo 6M)
Had a 911, have 3 kids, needed something comfortable for the family. Looked at the 550i sport and thought I'd get too many tickets. The 535i sport is just a little more "real world", but still handles like a proper sport sedan. The xi models understeer more than I'd like, and the sport package on the i model is a true bmw sport package (suspension). The twin turbo motor gives you v8 torque and horsepower, I suspect that the ratings of 300 each is understated. Saving 10 grand over the 550 sport was worth it.
IDrive(it's easy), base stereo is very good, sport seats, 6spd tranny w/ paddles. Car is very luxurious coming out of a 911. They should offer M suspension on the 535i. A thoroughly enjoyable car all the way around.
M suspension option w/ 535i engine... 535i wagon w/ sport. I think x drive takes away from the cars handling.