It’s hugely dependent on body shape- I despise Kifaru’s hip belts. They are way to large/wide, slip and greatly impede hip movement and mobility. This has been a common complaint of most of the people that I was referring to above. To get the belt to not slip requires it to be extremely tight. As well, they generally have a massive lumber pad which also causes the belt to slip if you don’t have a deep lumbar curve, and again means that some/most need to tighten the belt even more, which puts significant pressure on the lumbar.
This is not me saying Kifaru doesn’t make a good pack- they do. It’s that most people don’t have the body shape that Kifaru’s are built for/around. The people I know and have seen that prefer them after using the others extensively- including
@Ryan Avery, all have a similar build. They really prefer them. But, for a lot of people that don’t have that body shape, Kifaru’s are the last choice among the top packs.
Kifaru’s are very good packs and for some body shapes are the best available. For some body shapes they are not good. But, take body shape out of the equation- functionally the X-Curve carries weight like the other top packs.
Yes it does. However, the “barreling” that X-Curves do, is not what most think of as barreling- it only happens with certain load types and packing, and is virtually unnoticeable while using it.
I purposely put a load of frozen meat with a bulge in the middle on the shelf of an original R3 5900 non X-curve right in the center of the frame then cinched it down as absolutely tight as I could get with my knee pressing down to purposely try to break the stays and cause the most barreling possible. I succeeded in breaking a cross stay, and damaging another. The pack carried a very heavy load out in relatively steep terrain without issue, and I could not tell anything was wrong outside of when picking it up.