I use my old Kelty I've had for years. Just pack meat with it, don't use it much anymore other than that.If you are looking for just a meat hauler, look at the kelty or the cabelas guide frame. if you are hauling for a day or 2 and then get to rest your bones, these frames are fine. If you are hauling for clients 20x/yr and need to perform everyday, then look at the high end frames like a kifaru duplex with a cargo panel or the Stone Glacier minimalist setup.
I want the 2015 exo 3500 bad! Wow they are expensive though. Hard to find anyone to say anything bad about them. Same can be said for Kifaru and Stone Glacier too.Exo mountain gear. ..worth every penny for a long term pack...if u don't care about backpack hunting. .probably not what you need, but if that's in your future they are a great pack for trips and meat hauls
I just bought the eberlestock F1 mainframe for this upcoming hunting season. What I love about it so far is how lightweight it is, I can attach my day pack to the back which saved me from buying another pack and even if I carry eat I can adjust the straps to put the meat between frame and my day pack. It works great for me and after this hunting season I'll let you know how it feels to pack out meat....hopefully!!