>>1147432I meant to give an explanation but hit enter too quickly. The Osprey is 1 pound less, has literally every feature you can think of (will help you decide what you actually need on your next pack), is extremely comfortable, and the backpadding has the best ventilation. Here's a review from section hiker (a noteworthy gear review site):
https://sectionhiker.com/osprey-talon-44-backpack-review/As for the stout, I can't get over a 45 liter pack weighing 3.6 pounds. It is also feature rich, but the comfort level - on eye test - does not look close to the Osprey.