OK, different question, are there any Europeans here? 
...and a German...A few [2 French, 2 Dutch & a Pole (or 2) at the last count] but there must be (many) others who never post.
...yes, you should...As for more specific questions, should I ask in each model's subforum?
...in a direct comparision...the STS is a little more "out-dated"...I'm thinking about getting a used STS or 2nd gen CTS (both V6), what are the main differences? Other than the CTS has better fuel consumption.
Boy if you thought Sebring had a soft ride you are in for a treat with a Cadillac.... My close friend has a Sebring and it's s horrible to ride in.So as a Cadillac fan, would you say CTS makes a meh cruiser? I mean, I have to drive the egg-shaped Euro Civic at work and that thing has pretty harsh suspension. My current car is even worse. A year ago I drove a 2005 Sebring convertible and the softness made me want a cruiser. Cadillac is still among to top, because I love the design.
My '00 convertible rode very softly and smoothly. Incredibly comfortable, and having experience in both I'd confidently say it was more comfortable on a road trip than a first gen CTS. My 04 sedan was moderately comfortable but no more so than any other standard mid sized family car. The third gen (07 on) is atrocious in every way. -your local Sebring lover lolSebring Converitble ride varies greatly on what model. Wide tires and handling suspension nightmare hard and corners like it is on rails, rental fleet base models were pretty nice cruisers.
STS, (and even CTS) would probably beat them both in ride quality by a mile.