>>692694Take the Liter values on the pic with a grain of salt, If you got ok weather you don need the packs that big.
And usually packs are made for a specific activity, mountaineering packs for example are different from normal hiking packs because you need to bring special gear like ice axes and rope and crampons.
So best is to define what you actually wanna do with said pack and then go from there. Also, some packs who are otherwise perfectly fine just don't fit you, so always try them on first, loaded with the weight you intend to rock.
>got a generic cheap ass pack for day hikes and snowshoe trips and it does just fineorganizes stuff as i want, has the features that i want, costs $20
>got a not cheap at all Deuter Futura Pro EL for weekenders and mountain hut touring.Fits me (i'm 202cm tall), is light, lets me bring enough gear, but is still not a tank. cost me $130
>got a fuck expensive Gregory palisade for multiday trekkingFits me, lets me haul 60lbs (food for two weeks plus gear) "comfortably", is built like a tank, cost me near $300
Depends a lot on what you do and what you want.