New to this site... 1st time poster! Looking for information from the experts out there... I just removed my old Buck insert that I've been heating with for 23 years, (which I bought at a garage sale for $150!). Great heat, but highly inefficient. I've been shopping around a bit for another insert and was surprised by the $ of a new one. I've talked to some dealers around the area and they offered the following: Lopi Revere, Lopi Declaration, Fireplacextrordinair, Avalon Rainier, Vermont Castings Merrimack, Buck, Napoleon, and Lennox. I'm also not sure about the benefits of catalytic vs non-catalytic. Any information or experiences/suggestions would be greatly appreciated!