I have a CTS and love,love,love it!
It's been a great car, and the first "Caddy" I ever had - I am impressed with the Cadillac service also, and the feeling Cadillac gives you as an owner (that they are glad you own one, and will be there for you).
Now far as the ride (and the seats), it is not your average cream puff feeling - more like a sportscar. My DH had a Corvette and thinks the steering is comparable to that, very "quick" which I also love - no wandering all over the road, it just sticks where you want to go and is great in corners

The turning ratio is perfect, I can turn on a dime when I find a great parking space (!), and it's actually pretty small and fits in smaller parking spaces - now you have to realize I was driving a Ford Excursion (huge SUV!) before this CTS, so anything would probably feel small to me!
Mine is Sable Black, with Pewter (grey) leather interior and Luxury Sport package, which includes the 17" polished alloy wheels instead of the regular 16" wheels. (I don't know if this is such a good thing - my DH ran over something in the road, and we had to purchase a new tire, and those 17" tires were very expensive to replace, almost $300 each! Yikes!) When it is clean, it is a very beautiful car!

Wish it was cleaner more often. I also got the Bose system (great sound!) the 5 speed auto transmission, the express open sunroof, and the split folding rear seat. The standard features are great too, including the front and side air bags for driver and passenger, ABS, steel safety cage, traction control, Onstar....
The only con I can think of is that the trunk is not so big, so be sure it will be big enough for you - the only time I have a problem is when we have a lot of people fly in to visit us here in Florida and I have to pick them all up at the airport with all their luggage. Also since I've never had it in snow, I don't know just how it would be.
I would definately buy another Cadillac in the future!