Having gone from a Roadtrek 210P to a Phoenix Cruiser 2350 we now feel like we are in a huge mansion, space wise! However, we do have a corner bed and a full bath.
I think most of us have been looking for the perfect rig for our needs.....and never really finding it. It just seems that all rv things are compromises. We loved the Winnebago products with the rear slide for the bed, making it fully walk around. BUT, we didn't want a Mercedes chassis.
Here is one thing we found out: when you get anymore room you also get more hassle parking, driving and a few other things. Like you, we were B people for four units and have had a couple of small Cs over the years, including the current one. I must confess: I miss our Roadtrek but the extra room and the change in how we use our rig makes up for it.
By the way, check this out for a C so small it is almost a B but has a dinette, nice kitchen, a conversion bed, full bath, etc.
http://www.phoenixusarv.com/2100.html
Paul