My house is a very not air tight double wide modular with r11 walls. Better than nothing , but I have been making more energy efficient upgrades every year. I do believe the biggest return is always efficiency.i have done attic insulation, air sealing, and doors. Not going to be done over night as I do it all myself. But what my top choices are based on is, number 1 is the one I absolutely want, and first choice, number 2 is the next choice with the dealer closest to me, and number 3 is the next closest dealer. That way I would give each dealer a chance for my business. I am glad to hear you have good luck with the stove. My only concern is drafting in my situation and area. I would need 18 +/- feet of chimney, and I live in a very windy location. I had to play around with my barometric damper to get it just right, and still play with it now. It's just about as open as it can go, but I'm right at the spec they recommend. I don't want to put a key damper in right away, but wonder if that would be best to do and not regret not putting one in.