A couple of things to consider with the AR-ONE 16BH or 15RB. They both have small holding tanks. If you are camping without full hookups you need to use the bath facilities sparingly - black water 9 gal & gray water 15 gal. So if you are going to shower it better be the kind they do in submarines. I always try for full hookups but am going to invest in a "blue tote" just in case. One nice feature is the garden hose attachment for the gray water. You can just run a garden hose to the sewer instead of the 4" stinky slinky - The 9 gal black water will last a long time especially if you use the toilet for just #1 like we do.
The other downside to these trailers is the 13" tires. The tires are very near the weight limit of the trailer so I upgraded to 14" wheels & tires to add a little more safety factor and the larger diameter tires will turn slower at highway speed thus keeping the bearings a bit cooler also. If buying new I would try to negotiate with the dealer on including the 14 inch wheels & tires.
Other than the above, I am pretty happy with the unit but have not used it in real hot weather to see how the window style AC keeps up.