Comparing the two trailers, the construction of the ATC is how the Livin Lites were made before the buyouts with superior craftsmanship,the finer touches on the ATC trailers are much nicer such as the recessed custom LED interior lights,and most of the systems monitor electronics are in one central area. They still use an aluminum roof.
I like having a 30amp power system vs the 50amp on the ATC.
I'm very satisfied with my 2013 6x15 and would only sell it if the right CampLite 16 TBS with dual axles and slide out dinette were available.
We didn't think we would use our trailer for as much camping that we have used it for, we already have pulled it to Colorado and back to Louisiana five times. The tent sleeper is the main drawback having to set it up and worry about eventual water leaks in the fabric, I'm researching the possibility of installing an awning that I can pull out over the sleeper tent for added protection, we have a Pop Up Gizmo cover for the sleeper but it takes some time and a ladder to set it up.