I've been experimenting the last couple days with various stoves as to boil time. I use the same amt. of water in my pot, and time the stoves to boil point.
The Sterno, The Esbit, and a liquid alchohol pressurized. The Sterno never brought the water to a rolling boil, but close to it. The Esbit burned hotter, but one fuel tab was not enough. The only advantage to the alchohol is it burned hotter than Sterno, and longer than Esbit. None of them would be sufficient in my take on it to cook a meal on. They all would get water hot enough for freeze dry and coffee.
I'm going to take a look now at the fuel gas stoves like Primus and Jet Boil.
If I don't like what I see there, the liquid alchohol will get the nod.
Ben