My first Airstream was a 2004 19' Bambi CCD and my TV is a 2005 Nissan Pathfinder.
Having never towed before, I felt that it was a pretty good match.
After driving thru the Grapevine with some HUGE trucks speeding by and experiencing the dreaded white knuckles, I rather changed my opinion!
It's not that the Pathfinder can't tow a Bambi, it can, and fairly well.
I went from Orange County to Albuquerque, NM and back with no problem whatsoever. I believe the wheelbase is partly the issue when going downhill and on curvy roads with Semi trucks whizzing by!
I now tow a 'vintage' 19 foot Globetrotter and find it a much better match!
I believe being 1500
or so lbs lighter makes a big difference.
If you decide on the 16 foot Bambi, you may be quite happy.
One question for you if I may ask? Are you looking for gas mileage?
My Pathfinder gets 15.5 on a regular commute day and 10.5 to 12.5 towing.
I know people with much larger new Suburbans which can tow a 26' Overlander with power to spare and they get 19 miles in the city commuting!
If I had my choice again, I would get a Suburban which could tow most anything you put behind it and be in total control than the Pathfinder which guzzles the fuel.
You could get the Nissan Armada, but city driving you're lucky to get the 10 mpg.