I put the new Contisport 3's on mine a few weeks ago. The change in ride quality (for the better) is noticable right away. It is much more compliant but strangely feels more responsive in spite of what have to be much softer sidewalls.
I had the opportunity to give them a good run in the mountains this weekend and I am very impressed.
I can't wait to feel the difference when I get it on Road Atlanta next year at the next BMWCCA event.