Aframe

The one thing I don't like with the A frames is that the wall next to the sofa/dinette seat is angled. I like to sit sideways and lean against the wall - can't really do that in the A frames I've seen. But, I think the hard walls are nicer than the pop-ups and easier to deal with in less than perfect weather (no having to dry out canvas). But the pop-ups are more "spacious" with the tent ends.

I think it just really comes down to the individual picking their most wanted/needed features and choosing the style that meets those the best.