I live in middle Wisconsin, on the MN border. Our winters average 0-20 degrees mostly I'd say. I have a CB 6048 and have had it for 3 or 4 seasons. My brother lives next door to me and has had his 6048 for about 12-15 years or so. We both burn about the same amount of wood and heat about the same amount of space. I live in a Dome home so it might be hard to compare, but he lives in a normal home, 2 story with basement, also heating his 24x24 garage and a 40X20 detached shop. He burns mostly dead fallen trees, all kinds, no splitting. Also burns thin rips from a local millworking shop. He never uses any addititives in the water, burns most of his garbage, and hasn't had any problems with his stove.
I use additives, but no garbage. I tried to split all my wood this year, but it was only cut one season so it didn't get very dried. No problems with my stove either. We're both very happy with our units. I personally like the "no fan" thing, and don't want to add it to mine. It burns good for me. I figured I throw in about 10 square feet of split wood, twice a day. 6am and 6pm. If I had to guess as far as wood usage... I'd say I burned about 10-12 cords this season. I'm sure he's about the same.
Hope that helps you out.