I suggest spending lots of time inside the units you are considering. Get rid of the salesman so you have quiet time to contemplate your surroundings.
When seated, is that comfortable? Can you view the TV without twisting your neck? In the FB models, move the cushions on the dinette to view the TV. Is the length of the bench seat comfortable for you for more than five minutes?
Is the "best seat" in the house high enough for your knees? Some are lower than others. Is there adequate space for your legs and to do the necessary paperwork?
Are you tall enough to see the floor in the bottom of the roof locker? If not, a folding step stool has to have a storage location inside for easy access.
Is there a pantry installed/option? Get creative in thinking about what else could be stored on the wire shelves (we added several more shelves to our 25FB but then access can be an issue).
Note where the power outlets are in the trailer. Are there enough to plug in the electronics we all carry today?
If you plan the occasional remote camping experience (no hookups), then do you want a generator running to recharge the batteries, an inverter to run some AC appliances, and perhaps a solar system to recharge the batteries quietly, etc?
During our solar power conversion, we swapped out the single outlet AC power outlet for the microwave and put in a fully functional duplex outlet. That allowed for a simple extension cord type run behind the kitchen cabinet to an outlet in the closet for any rechargeable devices we might wish to have with us.
The power outlet modification could be done to the single outlet TV power sockets to make them a functional duplex outlet for some other device.
We also extended duplex outlets (using a GFI duplex outlet as the first new outlet in the extension) into the rear storage and street side storage compartments as well as the water service area in the street side rear of the Classic so a heating device would help keep that unheated area from freezing.
Take note pads and make two columns headed "PROS" and "CONS" on a page for each trailer you seriously consider. That may help in your forum research for the perfect trailer for you.