Id say the unit doesn't matter that much, but for survival, dont make just jerky, theres not enough nutrients in it for survival. Make something called pemmican. Pemmican is made from jerky, the american indians used it for food. All it is is jerky mixed with a equal proportion of suet, or melted fat. Look up a good recipy, Pemmican contains all the nutrients one needs to survive except vitamin c. Good luck surviving