2008 BMW 5 Series 535xi 4dr Sedan AWD (3.0L 6cyl Turbo 6M)
Living in a cold climate with snow / ice on the ground for much of the winter, I was looking for an AWD performance sedan. In the end I settled on the Acura RL, Infiniti M35x and BMW 535xi (though I loved the M series, I did not consider them practical for year - round driving in my climate, even with snow tires). From a "thrill of driving" and performance perspective, the 535xi quite simply left the Acura and Infiniti in the dust. Acceleration and handling were no contest 8 months later and a rough winter under my belt, and I couldn't be happier with my choice. Comfort seats and access are a must.
Driving in manumatic brings out the best in the 300 hp twin turbo with no noticeable turbo - lag. As far as acceleration and handling, only a true sports performance sedan (BMW M series, Merc AMG, Audi S series) could do better. The iDrive is a breeze.
Better cup holders, I suppose. Then again, one doesn't purchase a BMW for the cup holders.