Correct me if I'm wrong but I was under the impression that the popup is not even in the same league as something like the Metcalf or the exo line? It breaks because it's essentially a day pack that can and does haul out meat but it's not designed for the rigors of the packs that utilize the Guide light MT frame? I could be wrong but I just want the OP to receive the most accurate info. Kind of like comparing a Toyota P/U to a 1 ton dually if you will. I'm also interested in how you broke the sawtooth pack? What frame and how did it break if you dont mind me asking.
i think you are spot on. the pop up is a daypack that converts into a pack capable of hauling for that first load back, it's not meant to be a primary load hauler.
i have had great luck with my pop up 18 with several whole quartered deer and elk quarters.... it has exceeded my expectations, and is a very valuable piece of gear to me, but i could see having issues if you exceed it's purpose on a regular basis, like i have.
i am going to try to be easier on it in the future, because they no longer make the 18, and it's the perfect day pack for archery elk around here, so i'm going to keep it for that only.... i have been pushing it with that little pack.
it's awesome for the niche it fills, but it's not as capable as an actual hauler. i just ordered a SO peregrine, and will probably use that for everything besides day hunting roosies.
thinking next year i'll buy a kifaru Stryker with the 22" frame too, that may be a sweet little pack for the brush.
i'm also really interested in the new K3's..... that may be a tough sell to my wife, but the plan is to get enough packs in the house she doesn't know what i do and don't have.... the ol' rope-a-dope