If you go with a name brand and select a model and floor plan that best suits your budget, ANTICIPATED NEEDS , and tastes, you will probably be reasonably happy with your choice. The real differences in housebox quality are in the builder's choice of materials, use of fasteners and adhesives, in-process quality controls and quality and speed of dealer after-sale warranty fixes of factory mistakes. Most motorhomes use same brands of generators, air conditioners, fridges, furnaces, water heaters and appliances. Most Class C's use same Ford E-450 van cutaway chassis, some prefer the Chevy alternative.
If you pay $10K more for a Lazy Daze, and keep it maintained and attractive, you can probably sell it quicker and for considerably more money than a lower priced name brand rig