hello to all. I am new as a member to the forum, but have been doin homework and research for a few months from the posted topics. I am very pleased to see the vast amount of knowledge that the members not only have but are willing to share with others. okay that being said here goes... I recently purchased a woodchuck 4000. Its an older version than the newer 180,000 btu models, its rated a 140,000. still has secondary heat exchange and forced draft inducer. stove is in pretty good shape overall and everthing works as it should.. 750.00 cash, hopeing that was a fair deal. i wondered does anybody have experience or opinions on this stove as to quality, heat output, and efficiency/burn times. any input or help would be appreeciated.