I'd like to update this thread. After much thought I sold my 16' TT, and 2 weeks later I bought a used 2010 Aliner Ranger 12. It came with a custom full size mattress for the rear. I have stowed away my pots and pans, eating utensils, etc in the cabinet by the AC. Small miscellaneous items went into 2 rubbermaid bins below the rear bed. Electric cords, water hoses, wheel chocks and blocks will go in the outer door at the rear. The area under the sink will be for food, most likely. And I have the spaces below the two front bench seats for clothing, towels, and anything else. IT ALL FITS!
The Aliner has a receiver tube on the rear for my single bicycle. The Highlander can carry the solar panel, zero gravity lounger, and any other large items I want to throw in. I will probably put the stand-alone table in the Highlander as well (assuming I even want to take it), because it's so much easier to access the cargo in those benches if there is no table in the way. And in the front end I can leave the porta-potti out for easy access.
I might miss the shower on some rare occasion, but I certainly will not miss the 11 mpg or the wind resistance of a TT. Towing the Aliner home was only 42 miles, but the tank took exactly 2 gallons for a total of 21 mpg. That's too short a distance for great accuracy of results, but it tells me that I can expect to use very little extra fuel while towing the Aliner. I didn't even need to lock out overdrive for most of the way.
