We are a couple who travels just the two of us. We are upgrading from an Epro 19FDS to a Flagstaff Super lite 26FKBS (we pick the new one up tomorrow!) for a couple of reasons. We really did like the smaller trailer, but it has a murphy bed so you have to put it down every night and back up in the morning. If you wanted to take a nap during the day, you had a choice of the jackknife sofa which wasn't great or putting the bed down. And if one wants to go to bed early or get up early there isn't much room while the other tries to sleep.
I am also having some mobility issues that make not having a walk-around bed a challenge. The new trailer has that type of bed and a separate bedroom for more space and flexibility. We camp in the PNW so bad weather days will happen. It will be nice to have more room and comfortable seating inside.