I did discover something I dislike about my trailer, but I'm sure it is exactly the same for any 14k trailer. Unloaded, it will beat you to death. There is just enough weight in the tongue (coupled with my typical bed load) to load the suspension on the truck and make the truck ride more like a truck of 20 years ago, and of course there is NO give in the trailer springs without a load. Between these two things, I had to stop a couple times and rest my back on the way there. On the way back with about 3500lbs on the deck, it was MUCH smoother so there were no stops.
Happily I bought the trailer to use loaded and will very seldom be towing it unladen. Hopefully no more long trips too..