I own a Satori EXP and a Loka and a Bach Big Cheese for Mountaineering. The carrying comfort of the Satori is very good, the shoulder straps and the hip belt are very well padded – you can carry quite a lot of stuff (i.e. a heavy load) comfortably for the whole day. Although the padding of the back panel could be a bit better, I tend to get a little sweatier than with the Bach. Other packs like a Deuter or Bach (or any other brand like Mammut, Arc'teryx, Osprey, Black Diamond, etc.) are probably more comfortable to carry but the photo-functionality suffers greatly. If photography is an important part of your endeavor I would go with the F-Stop pack.