My Cozy VC351 vented room heater (http://www.cozyheaters.com/pdfs/products/spec_sheets/VentedConsoleHeaters.pdf) now needs to be replaced with something else. My condo is only 600 square feet. The Cozy had 24,500 BTU Output and 35,000 BTU Input (don't know what all this means). But I know that the heat it gave me was enough. I'm now thinking of either getting the Vermont Castings Stardance (http://vermontcastings.com/products.asp?model=VF_stardance) or the Enviro Westport (http://www.enviro.com/fireplace-products/gas/freestanding-fireplace.html#westport). I plan to buy them used from individual owners who are selling them. If I have a choice between the 2 models, which one would you recommend? Any feedback will be highly appreciated. Thanks.