yeah, i have heard of those, i believe Armstrong still rode them even though he was sponsored by Bontrager, because nothing bontrager made came even close. But now, bontrager upped the ante, with the ***-lites and their new deep section, so now he rides Bontrager. Ive heard the lightweights are rediculously expensive, and living in America, I've never seen them in person. Plus, ive heard that if anything goes wrong with em, they have to go back to Italy, or wherever they were made, to be repaired. So, in my opinion, they're like riding in sleet, do it only if your a professional.