We are a small family that loves all kinds of hikes around our state. This is our first pack purchase and all three of us purchased the Stratus/Sirrus pack (husband/wife/petite teenage daughter). We have used it for small 90 minute climbs, two-hours trails, and eight mile glacier hikes. I am impressed that we can pack it full for all kinds of weather conditions or pack it light for a short walk and it it comfortable. We do not use an Osprey hydration pack, we are using another brand and haven't had the issues others have mentioned as ours came with a magnet clip. It is a little difficult to load the hydration pack full of water though. We hiked to Grinnell Glacier in Glacier Nat'l Park last fall and I barely felt the pack on my back the entire time, I had it fully packed with my gear and lunch for all of us. I love all the pockets and found everything accessible the entire day. I don't carry my phone for pictures since I have another camera, I kept snacks in my side pockets so I they were a good size for me. All in all, we are all very pleased with this pack!