I LOVE the new air mattress sofa. Replaced our two raggedy horrible recliners earlier in the year with the new sofa so we have two sofas in our 2006 BH3400RL. Best thing I ever did. IMO, it sleeps better than the king bed!! Also, the sofa is higher than the other sofa that was in our unit and it is easier for me to rise from. Just a case of individuality and what each person likes. Did replace the original air mattress and new one works great, only an occasional blurp of air during the night to reinflate. We made sure we covered any exposed bolts or metal parts on the frame that might dig into the underside of the mattress.
Our biggest problem is keeping our two cats (with back claws) off the mattress when it is out for use. They think it is a great place for naps. I put out a special pad for them and they now know that's their spot and they can't go anywhere else on the bed!
Good Luck with your sofa!