I have a 2015 with sofa slideout. Biggest issue I have had which a lot of others have had as well is after doing an axle flip large cracks developed in the frame between the axles. Lippert took reaponsibility and paid to have mine repaired/beefed up. My understanding is that last year they made some frame changes to address this problem. Believe the trailer now also comes from the factory with spring over axle flip like it should be.
I would say the overall build quality is inline with the rest of the industry. Sometimes you luck out and get a good one and sometimes you dont. The biggest thing I like about the trailer is its overall size/weight combined with lots of garage space. Trailer tows very nicey behind any 3/4 ton.
