It's like everything else installed in a camper. It works but isn't the best and not very good in many cases. If manufacturers put the best stuff in campers, they would sell very few campers. No one could afford them. Imagine shopping for a camper and seeing the price tag doubled.
It reminds me of when we bought our camper. Small dealership and the owner, who I know personally said to me..."They're all junk. Every last one of them and If you knew how these things were made, you would never sleep in one". That tells you a lot about what manufactures put in them. There has to be a huge profit margin for them.