Also be aware that pot diameter, distance to flame etc. will have an effect on performance, slow can be much slower.
The brasslite web site explains it very well.
I have both there stoves and trangia but the info. is useful for either
style.
Caldera Cones are something else to look at.
I use a home made Alu. flashing wind screen with my stove and
surround the pot with about a .5in pot to screen gap, it really helps.
Don't forget to punch some vent holes near the bottom of the screen or your stove can overheat. I only surround mine about 80% and punch vents as well.