Lori pointed out an important point in another message. The type of stove that works best may well depend on what you are cooking.

My recipes all lend themselves to soaking in water to rehydrate for a few minutes, quickly heating to a boil, and then waiting 5 minutes to eat. With this type of cooking, fuel use is very small.

I'm also working on getting the cost of 3,000 calories below $3.00. I'm just about there. I just have to make 2 little substitutions of convenience products.