The 19G is pretty good, and we looked at renting one to try it out, but there are a few too many compromises for us.
First, it has a wet bath. You can get that in most van campers.
It doesn’t have a permanent bed which is OK, but it really sleeps only two comfortably, and in separate beds. My wife would need to sleep on dinette, and I’d have to climb up on overhead bed.
There is very little room for guests, including young grandkids.
There is insufficient outside storage — almost none.
Hymer floorplan layouts in the 23-foot range solve all of these issues.