Originally posted by: herm0016
rei is a good place to go. I am a big backpacker, I have done trips where i have no resupply for up to 12 days.
keep it light. only bring what you absolutely need.
i would stay away from packs that weigh a lot, internal frame are usually more comfortable and much easier to use as luggage as you do not have the frame to get stuck on stuff. for traveling I use a large canvas laundry bag to put the pack in to protect it from the airport people. this seems to work much better than the trash bags others use and it is light enough to stuff in the bottom and carry on the trip. for 3 days with food you should be able to keep you load under 30 lbs or so.
i am a very big fan of granite gear packs. they are a little less known, but build really great stuff.
http://www.granitegear.com/pro...verview/backpacks.html I have a latitude vapor and it is honestly the best backpack i have ever owned. it carries the best around 30 lbs but i have had up to 40lbs in it without problem. the pack weighs about 2 lbs total. i have used it for urban backpacking in DC, i used it to travel to Texas, and have hiked in the smokies and in Michigan with it. I have used quite a few different brands over the years. Gregory, osprey, golite all make pretty good stuff also.
just remember, this is all very personal. backpacking gear is a very personal choice and everyone likes different things. do not just go buy something because someone said they like it, try it for yourself. put some weight in it. if you have the rest of your gear bring it with you and put all in a few packs to find one that fits your gear well and that you find carries well.
feel free to pm me if you have specific questions on gear choices.