We bought a 2008 Roadtrek popular 2.5 months ago. I first started out with a Mercedes at the top of the list, because of fuel mileage and they are SO huge inside. We looked at one, and the owner explained about some mercedes having emissions issues, so I started reading forums to learn more.
We went to Alaska last fall, and if anyone hasn't driven the Alcan highway, it's extremely desolate. Mercedes quickly moved off the list because I didn't want to get a Mercedes, and be on an alaska trip, have an issue, drive some 600 miles (if it would drive) and spend two weeks waiting for our home to get fixed.
Maybe I'm more on the negative side, but I try to fix what I can when things break. We chose chevy because it's is the easiest and most serviceable brand in the US. The modern Ford's and Ram are close behind, but the Chevy tops the list for servicability.