anyone have any experience with the larger (65000 btu) Empire vented propane heaters? Would they make a good choice for supplemental / backup heat in the main living area of a 1300 sq. ft. 2-story house that has an oil fired boiler as the main heat source? After reading many reviews of even the name brand pellet stoves, they (pellet stoves in general) seem prone to a lot of little problems, and the propane heaters seem like they would be more trouble free. Also, they do not require electricity, 'tho I would want an optional blower. thanks.......tony