I'm looking for a pack that won't break the bank. It needs to be capable of holding 5 days of gear and if it was versatile and could be a day pack thats a plus. I was thinking about a pack frame like Eberlestock f1 mainframe or other pack frame with one of my many military duffel bags strapped on. I mean, this is basically the whole idea behind the mainframe or Kifaru nomad but cheaper. Has any one tried this before? Any pictures? I'm also keeping an eye out for any used packs here.