We had a jack knife in our old 5er. Easy set up, but not very comfortable. Our new to us RV has the air mattress sofabed. Unfortunately we have discovered a leak in the air mattress near a seam. We think the mattress was pinched when it was folded up. DH tried to patch it, but since it is on an edge seam it wouldn't take. My father travels with us from time to time. He has used the dinette and found it OK, but it really is a pain to always set up and tear down. What we finally ended up doing was to throw out the double air mattress on the sofabed. He uses a single air mattress on the old sofabed frame. Every morning we lift it off the sofabed and put it on the front dash (still aired up and the bed linens on it). It's not pretty, but it keeps it aired up, made and out of the way. Much easier every night to set up. When we are driving to another location we put it on our master bed. It's not the best looking set up, but very easy for us.
