Could not agree more. they are phenomenal. I took one to the mammoth sniper challenge last year, have carried the same pack on multiple multi day hunting trips and use one of their smaller packs as my idc/work bag and I'm in the market for another bag now that will fit in between those two for day hunts, I'm looking at the 357 mag for this, I have a shape charge and 44mag now.
I will share a quick story as a testament to their service. last year a few weeks out from mammoth my shooting partner and I decided to grab their gunbearers instead of trying to use the pack straps to pack rifles to our packs. they have a few options and I was sure which to go with so I just picked one as I couldn't tell a lot of difference from the description. my partner and I ended up ordering two different versions and after using them we found that the bottom portion for the buttstock that came with his was perfect but the top portion for securing the fore end worked better with the model I got.
I called them, got Aron Snyder (the president of the company on the phone) at around 6am their time, explained what we had received and asked if we could order one more piece from each of the two kits....... he insisted that the parts be overnighted to us at no charge even though I offered to pay several times because it wasn't Kifarus fault at all, he refused relentlessly and sent the stuff overnight at no charge and wished us luck at the match.