Muirenn - I'll check those out, thanks!

Sorry in advance for hijacking my own thread but I want to a LBS today to check out the Felt ZW series and ask a couple of questions. I asked the salesperson "are the ZW frames different or is it just different components between them?" His answer "no same frame, different components." Not true because the ZW6 frame was visibly different on the top tube. Then I repeated back to him what he said to make sure that was what he was trying to tell me. "So the ZW1 frame is the exact same as the ZW3 frame you have here except the paint job is different?" His response was a very smug "oh no the carbon is different so it'll be denser and lighter. When you're spending that much money on a frame it's going to be nicer." He also called the seat tube the top tube. It was driving me nuts that he was treating my very logical and reasonable questions like dumb questions and his response to the whole thing was "the more you pay the nicer it'll be." Well yeah, but what exactly changes!?