My opinion is a little different from boomermans, Bob, I have have several Thor RVs over the last 30 years and they served me very well. One was a small 5th wheel trailer that I bought new and had for 10 years and pulled it all over the US, Canada and Mexico with never a single problem, I pulled it with a 4 wheel drive through some rough country, off pavement, across and through rivers and would have it still but I needed something bigger. There are not very many RVs out there that are built like a Rolls Royce but there are some quality rigs. Just examine them closely and make your own decision on quality. A thing to look for is inside cabinets and how things are attached to the frame work . These things are usually made by folks that are on assembly lines and make just a little above minimum wage and sometimes it can show up in the quality.
Good luck with your search.
And when you do get your rig and make it out to the great Pacific Northwest I can show you some great rides!