Good points all around.
Buick Regal turbo when it is available 
Sorry, just can't do the Buick

If it said Opel I'd be ok though.
ID: the GC doesn't strike me as something that would be particularly comfy and quiet....but I'm not against a test drive.

Erik/TG/Julie: Good point, there is a lot of value in a car that, when you walk out in the morning and look at it, makes you go "nice."
The CLK or A5 would probably have the most "nice" effect for me. That said though I very much appreciate a well built car with absurd attention to detail and the IS350 is nothing if not well built (and ferociously quick). I think I'll have to see them all up close to really sort things out though.
But the G37 will always just remain a paper champion.
Spock: Good idea about the tires. I've probably got at least another 2 years left in the summers though. =\ And they are grippy which I love.

Actually you remind me, I can probably get some trade credit for the 6/32" RFTs on the Bimmer and get some non-RFT tires. Will correct my biggest gripe with that car.
AB: Its an 06, but I got it in March 07. The PT warranty is 5/100 so I've got another 1.5 years and 38k left. Hondata doesn't seem to cause any reliability issues though which is good.
S.O.L. (...

) Beautiful car, that Phaeton, but truly terrifying reliability. Not sure if I'm ready for a car with more rear seat legroom than front.