I read with interest the post by BrowningBAR 12/17 regarding wood consumption. I have decided as I wrestle with my plans to use my 79 Lange or a new stove with new technology, I should probably factor in how much wear and tear my 60 year old carcase has to go thru to make firewood. Anyone else want to chime-in with either personal experiences or statistics they have run across that compare using a modern stove equipped with secondary burn features against a 60's or 70's stove without such capabilities? When thinking about cost, labor, moving the wood once/twice/three times, cleaning the chimney, etc., it would be interesting to know if a newer stove in general cuts down the consumption of wood by 5%, 10%, 25%, more??... assuming other factors are more or less constant. Thanks.