We picked up our 2016 1234x on 7 feb. We came up with a fairly long list of small items during the walk thru that the dealer signed a promissory note to take care of. one of the things is a bubble in the side about 10" around. this is a thing that really concerns me, like enough that I am thinking now maybe I shouldn't have excepted the unit. I really hope it doesn't have to go back to the factory to get fixed, but I have a feeling it will have to to get fixed right. All the other concerns were minor and mostly cosmetic.
On the other hand, we took it out to the desert for Presidents day and it was awesome. it tows great and is so much more comfortable than our old bumper pull unit. Need to upgrade the batteries, I knew this from the get go but it is annoying to have to put 35 hours on the generator in one weekend.
I have a short bed dually and I went with the B&W companion slider. the way the trailer is shaped I probably could have done without the slider but I had no way to know that ahead of time. Oh well, now I have it in case I ever need it. Just wanted to share my initial experience.