I could use some input regarding which backpack I should get ..... I don't have much to spend right now. I will be using the backpack when I go bicycle camping, and do a little hiking around camp to get into shape and carrying stuff for birding: several bird books, two sets of binoculars, large digital camera, pocket tape recorder for bird calls, laptop, plus food stuff for the day and water, and a few basic emergency supplies. I'd like something that I could actually use for backpacking into the mountains for 4-5 nights. So it should be very water resistant! I went to the Army Surplus store today and noticed three backpacks that seemed like something that might fit my needs: 1) Pacific Crest Denali 5 + 10 (3966 cubic inches), internal frame, $70 2) Outdoor Dragonfly Framepack (2780 cubic inches), external frame, $50 3) European Rucksack (20x17x32), $32 Any suggestions and comments from experience would be appreciated. I really do want something that will keep my stuff inside the pack dry!