Steck, speaking as someone who has carried around a day pack with ten or fifteen pounds in it for most of my adult life, I can tell you that fit is VERY important, if you want to be able to use your arms or walk upright on a regular basis. If you are going to wear it often, a pack should fit as well as a pair of shoes, with nothing rubbing, poking, pinching, dangling in the wrong place, etc. It takes very little weight and very little time before a good suspension system becomes a must. Stop any high school or college student on the street and ask them how important it is that their bookbags are comfortable.