Does anyone have any experience or knowledge of the Quadrafire Explorer III. I was looking at the Explorer II and now see this stove. I have heard and read about issues with the damper on the 2's but other than that they seem like pretty good stoves. Our local dealer really wants to sell one and I want to keep away from a catalytic stove like the Lopi. Looking to heat as much of 4100 sqft in the southeast as possible, any other advice is appreciated!