I tried a bunch of packs bay in 2016. Kifaru was the best fit for me. I had a duplex hunter that the frame sheet buckled on me. Sent pix to Kifaru looking for a repair. They sent me the latest frame and told me to do whatever with the old one. I had a guy put carbon arrow horizontally to keep it from buckling and was going to use it as a loaner. Tried the new frame for 2 years but couldn't get it comfortable. Sold it and am using the old duplex. May get the ARK frame after it's been in used for a year or so. My biggest gripe with Kifaru is their shipping costs and now the purchase protection/tracking charges. I can ship to them for about half what they ship to me. Supposedly they've gotten better with it.