I have been looking at a couple of the Quadrafire wood stoves, the 5700 model and the Isle Royale. On the website, these stoves are rated to burn for as long as 20-21 hours. Is this just hype from the company or are they actually legitimate numbers?? Anybody who has one of the Quadrafire stoves please feel free to chime in with your burn times. I would like to find a large non-cat stove that has a long burn time and these stoves are interesting me very much. The catalytic stoves would probably suite our family a little better since my wife and I are away from the house for approximately 10-12 hours each day, but I am worried about the maintenance as well as damaging the combustor inside. That was one of the main reasons why I was looking for a long burning non cat wood stove. I'm heating around 3,000 square feet and I live in Western Maryland where our winters are usually around 20-30 with lows in the teens and down into the single digits at times. My house is also insulated fairly well. As always, any input is much appreciated.