I get what you mean. I'm quite a sporty driver and love driving in high speed through curvy country roads and my moms car has relativerly hard suspension and a few days I ago I was a passanger in my buddy's S60 and I loved the feeling of all most floating on clouds. With that being said I was will ever be able to afford a sports car I will probably buy a long distans cruiser to. A car with soft suspension is probably the ideal car to drive after 8 hours of work.
BTW, have you driven these face lifted S60s with different suspension settings(Normal& Sport)?