2003 Buick Park Avenue
 

I would have to say that if the Bonneville wasn't around I would get one of the new 2003 Park Avenue Ultra with the chrome wheels and a sunroof! Black w/ gray leather! Man, what a good picture!
-driverjohn2005

I would definitly have a Grand Prix. They are very great cars.

Also, I like the SC Regal in black.

And of course, the Aurora is amazing.

Two small flaws to your poll:

One, the Aurora will certainly cease production before the Bonneville (I believe this is its last year). Two, you didn't include the car that the Bonneville gets its chassis from: the Cadillac Seville.

I really like the Caddy CTS.

I wouldn't mind at nice Deville.

Its the nicest full size Cadillac, and that 32V Northstar...wow...giddy up!!

For performance the CTS is it. The recent version rocks and I have first hand info and product support. This car once slightly tweaked eats Audi a series and many more I will try and get video. Very nice car. I love the look of the current Le Sabre for a hotrod. I would drop a N* in it and lower it. Then paint it black and the rest I have yet decided on.

Ty

I guess we're talking only new cars here. I would have to go and get a used 95-99 Riviera.

I wouldn't mind having an Aurora. My friend has one and its as fast as and SSEi, plus its all V-8 power, no supercharger. I would love to own a V-8 powered car. But it shows once again GM made cars are the best.

What's this? No GTO option? I guess I would go with a Park Ave Ultra, an Aurora, or a GTP.

Well, today I've ridden in two 1995-1996 Riviera's. Both SC'ed, but one is a 1995 Series 1 SC'ed(my sister's) and the other is a 1996 Series II SC'ed (my cousin's). Both are very impressive rides. Smooth, quiet, and the difference between the ride quality in those and my friend Christy's 1997 SSEi is totally incomparable. The SSEi has a sport tuned suspension, while the Riv's have a much more refined system. Foot the the floor acceleration in the Riv's is insanely smooth as far as seat of the pants feels. You can tell you are rapidly accelerating, yet it is hardly noticable. Also, the cabin's are insulated with better quality insulation or more than Bonneville's. The Bonneville SSEi is a much noisier ride, not bad though. The SSEi also feels faster (and probably is due to it being lighter -yeah, finally something an SSEi is lighter than).
The Riv is a very precisely sculpted car for a gracefull apearance under all circumstances (not to mention geared more for middle-aged people who weren't hauling the family around anymore, but were looking for an cheaper alternative to the higher priced Elderado), while the Bonneville was given a sporty, aggresive appearance.
To get back to the Riv's I rode in today, my sister's (she's 24) 1995 is a rare cloth bench seat car, but with all the other options (only options not on it were leather, bucket's, and CD player and chrome rims), while my cousin's (he just turned 22) 1996 has every option short of chrome rims.
After having taking both for ride, I'd have to say that in a 1/4 mile race against each other they would be neck and neck. My sister's Series I speedo seems to move faster from 0-80, but she has a 180 t-stat and K&N.
More to come later as another ride in the 1996 is calling right now.