You are getting good advice here. Another question is about your stature: I have a Mountain Hardware Fluid 26 that I really like because I am tall, but it has a semi rigid back plate so is not for a lot of weight. Last year I made the plunge to an Osprey Manta 36 with the AG suspension, I have not made a hike with it yet, but I love the suspension and quick tests around the house seem like it makes carrying a little more weight a breeze.If you are tall, a longer pack is nice for weight distribution. If a little shorter, the packs you have selected look like really good ones.