I hike quite a bit and I like to have a backpoack. the lowepro. I carry body, 50, 80, 150, 250, extra back and 6x17 w/ lens attached and light meter plus filter and cables and about 5 pro packs of film. I am usually out quite a long time. With MF the cameras are really light but the bigger packs allwo you to carry your gear plus clothes. If you hike I woudl highly recommend a backpack.