I've packed meat with the Cabelas with no complaints as a meat pack only, just using the frame and some bungees and paracord. I've been training this summer with the F1 and 70lbs and have no complaints on it either. The straps aren't as heavily padded, after taking 75lbs 2.5 miles wearing only a T shirt I can see the checkering on the straps on my shoulders after I remove my shirt. It never bothers me or hurts, just makes an imprint. I have never had to pack meat wearing only a T shirt though, if I'm packing meat very far it's always been cold enough to have at least a bit more padding in clothing. If you want a meat pack that can also be a hunting pack I'd go Eberlestock. If you have hunting packs you like and are thinking strictly meat packing I'd probably go Cabelas. Pair the Eberlestock with a bag and you can take meat out the first trip. If you have only a daypack you can take some out but not as much or as comfortable as having a real frame.
My only complaint with the Eberlestock is that even after some trimming the Transformer bag and Mainframe pack weigh 8lbs. I'm waiting on a Exo 2000 I ordered earlier this summer. It will do the same job at 4.5lbs. It may be more comfortable too, I'll know when it arrives. It costs more also.