I've been looking into alternative methods of heat for sometime and recently stumbled upon pellet stoves. For some reason always thought this was a thing for people in the "sticks" (we live in the suburbs) but after seeing how pretty these stoves can be and did some cost analysis it could be a serious consideration. I did come up with that cost per 100,000 BTU is slightly higher on the pellet stoves than natural gas (we are paying $1.45/therm right now) but I think the effectiveness of the placement of the pellet stove and the efficiency could even this out. Our home is currently heated by natural gas with a Trane XR80 in the attic and the heating vents are on the ceiling of the 1st floor (living area), making it a little bit difficult to get the heat "DOWN" even with reversed ceiling fans. I'd like to consider a pellet stove for our living room which not only would hopefully heat the 1st floor more effectively at the same price, but add some nice ambiance as well. The 1st floor (living area) is only about 850 sq ft. Installation size is also a consideration. The corner where I'd like to put it is about 43 inches by 36 inches and we need to vent horizontally. I noticed the efficiency of the Enviro "Mini" vs the "Evolution" is 80% vs 83% respectively which seems significant considering their cost differences (negligible from what I can see?). What other brands and models should be a consideration? Harman Pro 38 Plus? I do like the idea of the models where you can just put down a hearth pad and not have to have a fancy hearth laid (as nice as that would be it sounds expensive!). Finally, I wonder if someone could point me in the direction of emissions comparisons, say, based on BTU or other basis so I might be able to see how pellets compare to natural gas. Thanks a ton. Hope to join the warmer side soon!