To keep the weight down, I'm with the oatmeal crowd. If that's my goal, I eat things like oatmeal, natural applesauce, whey protein, peanut butter sandwiches, rice, and lots of veggies. Veggies can get super expensive so I get the cheapest 16 oz frozen bags I can find. Could probably get cheaper but that would mean chopping. Beans and rice rocks. I highly recommend have a cooking source if eating out is to be avoided. Crock pots, Foreman grills, Fasta Pastas, portable stoves etc are great for extended stay.