I'm looking to replace my 1970's Zebrakenko road bike that was given to me for free by a friend, only because it really is too big for me, it's a 60 frame and I'm only 5'8". I've gone to a couple of bike stores and heard rumours from some of the sales people, mostly people dealing in Treks, not to buy a specialized carbon frame as they crack very easy and are frequently in the shops being repaired. I really like the Roubaix bike, but I don't want to dish out a few thousand dollars on a bike that the frame is going to crack on it within a year or two. Has anyone else heard this rumour or is this just propaganda from the bike shops, so that I purchase a trek bike instead of a specialized bike. Please help as I'm new to road biking and any words of wisdom will be greatly appreciated. My little town only has one local bike store and they only deal in Treks. When I was visiting a friend out of state I had a chance to try out a roubaix and fell in love...but not if the rumours are true!