So, I have decided its time to start building my survival bag, and I even have some of my initial supplies. My question, however, is what kind of bags do you guys keep your supplies in? I have a regular duffle bag with a few pockets in it, but I am thinking I might be hauling this thing around for a while, so maybe I should get a full backpack with a frame on it. What do you use, and please provide links to any sites you know of that have good deals on them. Thanks in advance, it will really help me out.