Need advice from experienced wood burners here. I am looking to buy a large wood burning insert to heat an open plan 4000sqft house I recently purchased. The fireplace is centrally located in the house in a large two story open room so heat distribution shouldn't be too much of a problem. I have a propane furnace as well as a heat pump for heat currently, but would like to do as much of my heating with the insert as possible. After lots of research I'm thinking a buck-91 would be the best bet (open to others suggestions if you have them). The reviews here seem very good, and I'm not intimidated by operating a cat stove. Only reason I'm hesitating is the local dealer and an experienced installer both recommended getting the non-cat 94 rather than the 91. Their position was basically the cat does nothing but cause problems. I haven't seen many reviews for the 94, but the few I have seen weren't that good. Any advice is appreciated.