Some thoughts:
Have you considered the luxury japanese cars? They tend to hold their value pretty well, and are a little more reliable than the european counterparts.
From the ones you picked, I like the 330.
I personally can't stand Audi - they are overpriced for the power/reliability you get out of them. (Even with the A4 chipped, it's still a low-mid 7 second 0-60 time) - basically an overpriced Jetta.
Infiniti luxury vehicles tend to depreciate a LOT in the first few years, and then kind of level out.
I'd suggest taking a look at the G35, M45, and maybe I35.
Also, read this thread from fatwallet - tons of great information on finding a cheap "image" car that's solid:
http://www.fatwallet.com/forums/messagev...word1=image+car
Hope that helps.