Has anyone done a comparison (or know of any test that have been done) of the burn rate and BTU content of denatured alcohol and HEET? I'm asking because a while back when I get into spirit burners I was using denatured alcohol, but these burners fell roadside due to fuel consumption at high altitudes in cold/wet weather. Now-a-days, I'm reading about everyone using HEET for these burners.. is this burn hotter and longer, or is it simply the "new fuel" for spirit burners?