Didn't read all 7 pages, however in response to the title of the thread, rucksacks suck!! It is your life in a big green tick however, and the load weight you will carry in whatever type you use will be positioned differently than just dead weight. You might have shit poking you in the back when you get in the field that you didn't learn how to pack properly by using sand, plates, human heads, etc. I have to go with the Troll on the above.