We have a Outback 250rs and have had a some issues that were covered under warranty.
The issues I have had were the refrigerator, which was replaced under warranty just after purchase, a leak at the fitting for the fresh water tank, some minor cosmetic interior issues and rear wall delamination, which was replaced poorly by the dealer, but they will be fixing it properly after the season is over. Many of the issues we had were the result of poor quality control issues in the service department of the dealer.
I enjoy the space in the camper, the front bunks for the kids work very well and the 13.5 ac has been sufficient to cool the camper even in the warmest weather.
Would I buy another keystone product? I am on the fence about that. I realize there are no perfect campers and have owned a Rockwood Hybrid that had to go back to the factory for bunk replacements, but feel as if we had less issues with our Forest River and did have a much better customer service experience with Forest River. Again, I think our issue is with the dealer vs. Keystone, but that has jaded my opinion of their product.
Good Luck with whatever you decide!