ok first things first. SSV NEEDS to be lowered and obviously have the 20 inch wheels. I don't know how they did it but they managed to make 19"'s look small. The rear end is way too high, and generally i'm un-impressed. I would buy the VZ SS over this personally if I was merely going on looks.
The Calais, on the other hand, looks amazing, and if they a verison with as much power as the SS-V i wouldn't doubt it would take more sales.
I think the Omega will look a right laughing stock with 16" wheels.
The Caprice and Statesman look cool, the over-hangs are questionable but hell they are the LWB models..i should cut them a bit of slack.
A relatively good job, but not consistent enough.