I bought one of these on clearout from REI last year for a Europe expedition and it far surpassed my expectations. Very comfortable with loads of adjustments and it holds a 3L water bladder perfectly. Tons of pockets and very strong, it held a 35mm digital camera, a netbook, all my accessories, a jacket, lunch and a few other goodies all very nicely. I would recommend a raincover as the material gets damp pretty easily and if you need your stuff to be completely dry it's not waterproof. Other than that I found no reason to want anything else; it's the perfect size for everything you would want in a daypack. I messed up buying the small/medium size, and should have got the medium/tall size since I have a long torso, but even so it was never uncomfortable, other than the waist strap being a little high. I'm buying another one (this time the large size)...highly recommended.