Driving the Cadillac DeVille is great. We took it to Tennessee in Dec. '05 and I couldn't be happier with it. It has plenty of room, is quiet and has an awesome engine! For a heavy car it really runs. I like how the power takes you over hills with the cruise on and only slows down a mph or so. Its fuel mileage was right at 26 mpg, now that's good. My only complaint really is mine has no OnStar, and the stereo isn't luxury car material in my opinion.
I really like the digital readout on everything. The leather seats are really comfortable and they adjust to plenty of positions. Northstar, what an engine. It has a bit of funf actor for a car this size, and 26 mpg highway / 21mpg city is really nice too.
None that I can think of except the stereo system. OnStar as standard equipment would be nice too. I knew it didn't have it when I bought it, but it was a good deal so we sacrificed.