We just upgraded to a new 2012 Open Range travel trailer. It's rated for four season use because of the way it's built and the R-ratings. We also looked at Eagle Premier fiver which is also rated for four season use. Jayco makes the Eagle and a line of travel trailers that are all four-season rated. Seemed to me that there was a good selection.
As for quality?? We thought the OR's were of high quality, but now that we've been using it all summer, there are a few things that were not well put together (the counter, things not glued down, the spare tire was swinging and not locked down). I agree that you'll probably always find a few things that need fixing. My husband bought a 2001 Terry TT brand new, before we met, and said he had similar issues. AS long as it isn't something major, we just deal with it.