As I've been thinking about doing more tripping, I've been thinking about the issue of food. I know some of you guys go the freeze dried route. But I want to be able to eat more of the stuff I eat when I'm at home, whether that means steaks, hamburgers, chicken, etc. That means I need a means to preserve some food while camping. I'd love to buy a YETI or other high end cooler to bring/keep food fresh on a trip, but the prices of those high-end coolers are astronomical (I guess that's why...