So how long do you think a 4+ftÂ³ Woodstock stove wood burn? You get 12 hours out of a Keystone, which is less than 2ftÂ³(?). There were a couple posts earlier in this thread from a couple of Buck burners. The 91 is a big stove, but it's not going to go for 36 hours between loads. I think Blaze Kings long burns come from well regulated primary air,and good secondary air supply to the cat to keep lit off. I think Woodstock does that pretty well, too, just without the thermostat. I would have to believe the firebox geometry has to come into play somewhere, too. I have never heard anybody say 'Wow. That's a great looking stove!' I'm not turned off by it, it's just very uninspiring. I have to believe they wood sell a lot more stoves if they had a different shape. Maybe they are on to something better, and we'll see a bigger Chinook, or at least something different.