Did I not read that some stoves will use an inverted canister, thus assuring no fractionation - 100% burn?
Well, there is no such thing as "fractioning" (where
only the propane burns off), but, yes, that's correct that inverted canister stoves get 100% burn. Also, inverted canister stoves will work in weather that's about 20F colder than regular canister stoves. See point number 2 in
this blog post.
HJ