I've always had good results with F-stop and have three of their bags. I just got their smaller Gura UL type, as I was finding I just loaded the larger bags with too much stuff. All sorts of other bags have been tried, and nothing seems as good. They are made for hiking and walking, not for looking like photo packs.
The best of the bunch was the Fstop loka, from about 4 years ago; a Lotus was added, lighter in weight, but not quite as nice as the earlier one. But the lightness is nice, and that's the bag largely used. The Gura UL was for carrying just a camera and a lens or two, for the day hike. Its a bit cumbersome getting in and out, but the overall detailing and quality is there. Something about F-stop bags is just well thought through.