I recently bought a new STS V8 AWD. Compared to the competition (Mercedes, Lexus) it was equal in performance, finish and fit. It exceeds the Lexus LS 430 in that its handling sports car like. It would cost $10,000-$15,000 more for similiarly equipped Lexus or Mercedes. I like everything about it except that the gas fill is on the passenger side. Fast, quiet, responsive and luxurious. Bottom line: it is the best value you can get in a luxury vehicle and it is definitely not your daddy's Caddy.
Performance, handling, ride, value. Stereo is to die for.