If you want a "global" lineup, you forgot Acura TL (or TSX) and the G35/Skyline. I also believe the Volvo S40/V50 would fit the bill too, and the BLS is certainly more of a "compact executive" rather than the 5er-sized CTS.

I chose the X-Type for ideological reasons, but I guess it would be hard for me to resist the current 3er and A4 (both best ever). I wouldn't buy any of them new anyway