Bought our 2014 Cougar RLS (keystone) & have had very few minor problems which was 2 months out on the 1 year warranty but keystone stepped up to the plate & fixed all under warranty .
Black tank wash not working Fixed
Minor leak in slide Fixed
Minor leak in slide window Fixed
Bathroom fan went out Fixed
All on Keystones dime with no hassle.
We have camped in our unit for over 100 days so far with zero issues except the minor one I mentioned above .
Would I buy another Keystone product? you betcha.
But you need to decide what works best for you