The STS (not the -V version) I drove was very nice. While I agree that the interior doesn't LOOK as nice as a lot of other luxury sedans, it still felt great. Leather was nice, car was solid, and it handled pretty well for its size.

Still, at $52K, I think I'd rather a used Audi A8 or something.

 

Only thing appealing is the motor...for me...I rather get a fully loaded 335 and
still have money left over.

 

Quality is an issue with GM, so is resale, and as you can see depreciation is also an issue. the larger ticket cars tend to fall very fast unless they are in demand like ferrari or porsche.