This is my 3rd BMW and 1st 5 series. I simply love this car. It is well-appointed, seats five comfortably and drives like a demon. The 4.4l engine is built like a Swiss watch, and can easily run up to red-line with no hint of roughness. The low-end torque is outstanding as well. With the 6 speed and sport differential the car hits 65 MPH in second gear in around 5 seconds. The sound system is excellent as well.
The six speed transmission, engine, overall appointments.
The cup holders! Of course, one shouldn't be drinking in such a fine vehicle anyway. :)