I wish I'd seen this thread before posting one of my own. To the O/P, good job in summation. I would like to add a few thoughts of my own. For Buick, it was the Lucerne INTERIOR that really impressed me. The wooden wheel, the wood trim, the Bang and Oslen stereo, the DVD screens in the back...what a great family car. It just needs the Ecoboost engine and a nice exterior. I go to sleep when I see it from the exterior.
For BMW, the 5 series GT is incredible. Horniest looking BMW 4 door they have had in a long time. I think it's nicer looking than the X6.
For Hyundai, I can't help drooling over the Equus. Love that car. Needs AWD and a more efficent powertrain but damn, it is a fine car. Especially the top tier one.