This might be an asinine take on the situation, but I feel there are better places to cut weight than stuff sacks. Stuff sacks never weighed that much to begin with, use as few as possible. Look at clothing & big 3 if you want to count oz's, not stuff sacks.
I apologize if people find this post obtuse for the subject matter, im trying to help
12 lbs is already acceptable for a thru-hike
AT: 695.7 mi
Benton MacKaye Trail '20
Pinhoti Trail '18-19'
@leonidasonthetrail https://www.youtube.com/c/LeonidasontheTrail
I’ve been carrying a zpacks blast cylinder shape, it has held up for the 400 or so miles and 30 or so nights I’ve been using it and still looks pretty new! I have hung it by either cables or over a limb every night. I have the rock sack too. Before that I carried an Ursack. It worked great too, albeit a little heavier. I would say, if you have the $, want to shave the oz, and want a great bag then go for it. I always use an OP sack inside it too, just for the extra odor protection. Why not? Personal preference, really.
... just to chime back in a year later. On my last outing into the desolation wilderness we stayed at a higher elevation at Jabu lake without any great trees to hang from; I use an ursack and tied to a tree away from camp along with my buddies usrack. At about 2 am and about 14degrees I heard lots of scratching sounds coming from up on the hill where our sacks were tied; I nodded back to sleep knowing my food would be there in the morning. I certainly would not have been comfortable if my 3 days of food was in a sil or cuben stuff sack. Of course there are different tools for different needs. I like to err on the more protective side.