I have both the Marsupial and Alaska Guide Creations, because I think each have great points. First, you can't get better quality and customer service than you get from Marsupial; absolutely first-class operation. My choices were driven by the size of the bino, so for Leica Geovids or Swaro 15x56s the AGC has more room, but for the other Swaros and most small to medium size binos, the Marsupials are just a solid choice. I even purchased the Marsupial shoulder harness for the AGC pack because I absolutely hate harnesses that ride up and don't stay in place. I also don't like harnesses with mesh or foam that collects stickers and burs to then poke into your back and are almost impossible to remove. The magnets in the Marsupial aren't good for pacemakers, but aside from that, they close very quietly, unless you just let the flap go, then it makes a click when closing. If you carry really large glass and want a chest mounted daypack, then go with the AGC, but if you want useable space for most binoculars with separate pouches for your rangefinder and calls, that rides close to your chest, then the Marsupial gets my vote. Many of the others, like Solo Hunter, just don't have enough room for hunting binos, though they may be suitable for casual opera attendance and bird watching if you are into that kind of stuff.