I cant comment on the North Face bags, but the Crumpler bags are awesome. Well built, well designed and come with a lifetime warranty against poor workmanship. They aren't the cheapest but they are a fun company. They do a number of rucksacks that they call "weasel proof" - which basically means that the zips are on the inside of the bag between your back and the bag. That makes it harder for a weasel to open it without you knowing! Theres also plenty of room for all your other junk in there.