Buying used can be tricky, but you can become an informed buyer by having a professional inspection done, and by focusing on brands that are less-prone to those types of problems. However, I understand it's not for everybody and that's one of the great things about America - we can all usually find whatever suits us and be happy. I know folks who love their brand new rigs as well.
As for the Canyon Star, I see those have an MSRP of $175,000. I know Newmar is a good manufacturer, but when, like myself, you don't have that kind of change laying around, it's not really an option. We looked seriously at a used Dutch Star before the FT.