I'm looking to get a new large-ish pack (60-80L). I want some feedback on packs that lack a solid frame, such as CCW or Cilogear. Is there a weight limit? How uncomfortable are long treks without a solid frame? I've read the rave reviews for CWW and CG, but wonder whether those were referring to mid or small packs and more fulsome trips.
Background info, in case it matters:
- I have a 30L CG Worksack, which is great. I use it for days at the crag or on ice. Not to be used for high altitude mountaineering because not enough room for all necessary gear.
- I have a 55L pack, which I use for longer hikes. Good pack, but I don't love it. It was from a new company (Boreas) and it was on clearance at REI, so I figure I'd give it a go at $80. Minimalist and its serves my hiking needs but lacks some features that I would prefer for alpine activity.
- I've rented a 75L pack on guided climbs of Rainier and on a week-long training course with Alpine Ascents in the Cascades. For the course, the pack was full and loaded on the outside (due to resource sharing needs among the group, i.e. pickets, shovels, wands, etc.)
I'm looking to get a good pack for mountaineering trips, where I need to cart a decent amount to base camp. I assumed that means 75L or so, but much of the research I do seems to suggest the 50-60L range is preferred. However, based on my albeit limited climbs (2) of Rainier and of the course, 75L seems the right size.
I am looking at the Cilogear 60L or 75L Worksacks and the CCW Chaos (either 66L or 70L). But from what I can tell, these packs don't have solid frames (correct me if I'm wrong). If I am carrying 50+ lbs of gear and food, is the lack of solid frame a problem?
Terrain/climbs I have in mind are those in the Cordillera Blancas (Andes). I'm probably going there for 1-2 months next summer. I've bought Brad Johnson's book and am considering climbs from PD thru D.
Thanks for sharing any advice or input.