I was curious how the Domane isoflex thing is holding up under the extended use by the Clydesdale set. I have been looking all over the forums and online and everything seems to be cool. The problem is there have been a few random comments about the flexible seat post greeting noticeably loose after a few months use. That is my big fear, and 100 positive posts go right out the window with one bad one. Maybe a Madone with a wider tire and some stem/handlebar adjustments could get to an acceptable position without worrying about the Iso-zone?