I love driving this car - my 2nd Bimmer. That I can't get CD track titles to display has been driving me nuts for three years. I see the new 7 series has fixed this, and some other iDrive related short comings. Too bad they can't make those changes on the one I already own.
Ride, audio, comfort! and fuel economy (relative to comparables).
Blue tech diesel wagon version? Better fuel economy. Better visibility to the rear. (Can't parallel park in the city without the Park Assist.) Another inch of ground clearance on the front bumper to spare it in suburban parking lots.