Xan; all the brands/models you listed are basically entry level, Jayco's offer a better warranty than most, and have a good following, but even then you have to have a good dealer to work with the warranty, so often it makes little difference. With two sons likely being gone in a year or so, any type of bunks will provide enough sleeping spots, but look at the bunks length's, many are only 6 feet long. You will probably be making up and tearing down a couch or dinette any time all 5 of you are present , no matter what.
As with anything, look for the better quality in the details. Screwed and glued wood cabinets are better than stapeled particle board with shelf paper covering them to try to look like wood, and so on.
If you believe you want to dry camp, (open land, no hookups) bigger tanks become important, so consider tank sizes.
Nobody with a travel trailer ever complained about having too much storage.
Nor did they ever complain that the truck was too big for the trailer.
And I still suggest the rental as the best way to narrow your field of possible units by better knowing what your family's preferences are.
