Crap. The pieces that you don't have to put weight on work great. i.e. the waist belt and back pad. The rest though not so good. Quality of construction is sub par. If your in the infantry and actually have to hump a heavy ruck save yourself the trouble and buy quality first. I would suggest the back pad and waist pad from CP as mentioned above, the bag modular from Dropzone http://www.dropzonetactical.com/backpacks/64alice.html, and I would highly suggest the shoulder straps from eagle http://sealsactiongear.com/catalog/store/comersus_viewItem.asp?idProduct=327
You can buy cheap gear but you get what you pay for. Take the advice you get on sites like this with a grain of salt, and consider where they come from. The requirements and usage for a trucker, or jimmy are drastically different than that of infantry. Spend the money once for good kit and you will never have to again. Hope this helps