I'd take this in a different direction. I would investigate Brands with regards to customer service and customer satisfaction. None will be perfect. Some are better than others, and you will need customer service and factory support in the lifetime usage of your RV. Just like auto manufactures, different lines have price points established to gain market share. The vehicles are build to achieve those price points and the equipment/ trim/ build quality is designed around that strategy.
All this just gets you to the place where you find your RV. Now, you need to inspect that specific unit. No matter the brand, level, perceived quality, or industry reputation. The best manufacture has lemons, and the worst manufacture can deliver a trouble free unit occasionally. Knowing the actual condition of the unit you are paying for is what is critical.
Best of luck