I have owned five RV's, built by four different manufacturers. In my opinion, they were all built with pretty much the same quality. They all require ocassional repairs and routine maintenance. When you drag these things down the road at 60+ MPH, thngs are going to come apart. The rougher the roads, the faster they come apart. Doesn't matter who put it together.
A well maintained, entry level unit, will outlast a high end unit that is not.
If you don't know your way around a tool box, you'll need to be ready to pay someone who does.
BTW ... Forest River is the manufacturer who built two of my five RV's.