I have an old Kifaru duplex frame with a couple of bags, have a Kifaru tactical frame with a couple of bags, had an EXO K3 3200, and have an EXO K4 5000. Like
@sndmn11 said above, packs are a personal thing and what I might find fantastic, you might think sucks. With that said, I agree with
@madcalfe, and I will be carrying the Kifaru if packing a heavy load is the plan of the day. For everything else, give me the EXO K4. It is really comfortable to me. It just doesn’t quite handle heavier weights quite as well as the Kifaru (for me).
Kifaru Duplex Frame/guide pack:
View attachment 964646
Kifaru Tactical Frame/Woodsman bag:
View attachment 964630
Kifaru Tactical Frame/Reckoning bag:
View attachment 964631
EXO K3 3200 bag:
View attachment 964647View attachment 964648
EXO K4 5000 bag:
View attachment 964632
View attachment 964640