[quote=ChrisFol
I use the Caldera UL Compact system and everything (cone, stove, alky bottle) all fits inside my pot, thus the whole system takes up no additional space.

As for the positives to the systems, it is just more efficient. Since there is no space between the pot, windscreen and stove the heat "stays in" the cone heating your pot more effectively which reduces the amount of alcohol needed and reduces boil times.

http://www.traildesigns.com/caldera-ulc.html [/quote]

I have never seen one fit inside a pot. It is always sticking way out of the top since the cone is so much taller than the pot

Doesn't an aluminum foil windscreen do the samething?