I agree about the 2-15k AC's. We were fine with 1-13.5k in the bedroom of our 06-ES 36TK3. But the 09-38' MS seems to soak up and retain the heat longer when you're in a sunny site. The 15k seems to make less noise.
We found this heater at a WM in Paducah, KY last month. It's really lightweight, sides and back stay cool, so can be butted up against the kitchen island. It has a lever to aim air flow up or down and throws off more heat with the fan, but is nearly as quiet as the oil-filled heaters w/o a fan.
http://www.walmart.com/ip/Lasko-Cycl...eater/12568625
Like the idea of a tankless water heater. Eventually, we'll convert ours.