Some questions are which companies provides the most reliable leveling jacks, slide out mechanisms, roof hvac, chassis, electrical systems, appliances, heated floors or ducted heat, refrigerator, slide windows or push-out windows. rubber roof or fiberglass, generator, etc.
Another which is best type question generally gets you a my brand is best type answers. Especially which is the most reliable component brands.
Just pick the floor plan you like in the brand that you like in the price range you can afford....there is no best or most reliable components as you asked.