We had a 10 ft box 1993 Starcraft starflyer which worked with 3 kids but after 4 we got a Fleetwood HW Redwood (model made only in 2004, 14 ft. box) I wanted the HW so as to avoid lowering the table to close up the trailer and with higher counters come more storage. The Redwood has a cassette toilet but no inside shower. Two king beds didn't hurt and of course easy to tow weight wise (though heavy for a popup), though you can't see over the top like the smaller pop up we still have great visibility around it. Took it on two cross country trips, over a month long each and put that thing in some sites a larger trailer would never go. We love the openness of the canvas, cross breezes, feels like you're sleeping outside, without the bugs. Not so great in the cold though, but we've loved every minute camping in it.
Then son #3 went to college and we went camping without him. Realized then that he had been doing all the cranking, bed set up, etc. Once we had to do it (and we're both over 50) it was time to start looking for a travel trailer. Spent the better part of the last two years researching sporadically and have narrowed the search some.
Full time, I wouldn't do the canvas pop up, or the aliner. If you want to stay one night somewhere on the road, up and down it goes. With something like the RPod you can just pull in and go to sleep if need be.