OK, I have been reading posts here for some time. Very interesting and informative. I am old, as is my Little Buck. I have had it since purchasing new in 1982 - saved for a long time to buy it - $900 in 1982. I really would like to have one of the new EPA certified inserts with all the new technology, but I have burned the "old buck" for a long time and guess I didn't no what I was missing. I actually didn't realize it until I decided just recently to direct connect my insert to a SS liner. It is in a Majestic metal ZC fireplace and has never been direct connected. Are the new ones really that good? Cause I sure have heated my house pretty well for over 25 years now. Is anyone else still burning an old buck? Just curious.