I poked around the archives, but not too many direct reviews of the performance of the Am. Classic conversion cassettes, as well as the Wheels Manufacturing version. So... those of you who have used them, what is your experience? Thumbs up or thumbs down. Just how well do those puppies work? FYI: I am thinking of switching to Campy but I am NOT dumping my new PowerTap SL w/ its Shimano freehub body (unless I switched the powertap freehub to Campy, but let's assume I didn't do that).
