I've got a small 125 sq.ft. office space currently heated with electric baseboard. Costs me approx. $150/mo. to heat it as opposed to $800/yr to do my 8-room Cape. I want to convert and was thinking about a gas stove when one dealer suggested a Rinnai or Empire wall heater instead. If I go with the stove, I can only vent from the top and am looking at the Avalon Eden, Jotul Allagash, and Regency H15. It looks like the cost of the heater will be $1000 while the stoves are between $1300-1900, with higher installation costs. Any experience or thoughts on wall heater vs. stove, and any comments about the stoves I'm considering? Thanks.