I have been reading a lot on this site and it's a bit overwhelming the amount of information there is to sift through. After lots of reading, I believe I have possibly narrowed it down to the Woodstock Progress Hybrid although I am definitely open to suggestions (that's why I am posting). I definitely want one with an outside air intake. We live in the Berkshires in Western Massachusetts and would like to use the stove as our primary heat source. We do have radiant heat on the first floor and baseboard heat upstairs, but we are on oil and I would like to limit our use of it as much as possible. As you can see in the layout, the stove is centrally located and at the bottom of the stairs. I will be using double walled stove pipe, not a chimney, and the total pipe length from the top of the stove to the cap will be around 18'. It is a straight shot up with no bends. The walls are R13 and the roof is R19. We have brand new Anderson 400 windows and new exterior doors. We have a basement and all of the rim joists have been insulated and new basement hopper windows installed. We have done the best we can to tighten up the house as it is an oldie but goodie, but it certainly is not new construction. I did as accurate a heat load calculation as I could and came up with 47,246 BTUs. All insulation is in the roof so the attic spaces are inside the insulated envelope but are not included in the total living space. The upstairs ceilings are 7' at the most with lots of sloped ceilings so there is definitely less total volume upstairs than downstairs. Also, I will need to buy some wood for the winter season and wondering how much I should buy? Hoping to get the most efficient stove possible. Hope this is enough info to get some good advice. Please let me know what you recommend. Thanks.