I only had the car two months, so I really don't have much to compare the ride to. My last car was a 2000 Acura RL, which road nice, but did not have the composure that the S has. The car definitely has a slightly bouncy ride, but not excessive like a town car. The one thing I do hear from the suspension is a thumping noise from the rear. The noise is only heard when city driving (under 30 mph). My guess is that the noise is either bad rear strut mounts or worse yet rear struts!
Thanks for everyone's replies!!!