I've run most of the high-end packs.
Exo, Tenzing, Eberlestock, Stone Glacier, Kuiu, Sitka, Kifaru and Mystery Ranch.
My hands down favorite is a Mystery Ranch. Someone earlier in the thread mentioned you have to choose between good fitment and meat hauling ability. I respectfully disagree. I have hauled 100lbs+ on my Mystery Ranches many times. Meat (bone in and bone out), awkward shaped loads, tree stands, full-size ground blinds, big water containers, long backpacking trips, etc.
They are extremely comfortable and pack weight really well. Kifaru makes an excellent pack as well, but the shoulder yokes are too narrow for me. Stone Glacier makes a great pack also, but their waist belts have too thin padding for my liking under load.
It's kind of like bows or boots...try a few until you find something you love. If you're really in the market for a great pack though, I think you would be missing out if you didn't try a Mystery Ranch. I've been running the Beartooth 80 for the last 3-4 years. I've done 13 days out of that pack with the lid on it. I have a Pintler (two elk images below) as well that is day pack size, but have hauled around 100lbs on it, no problem. The frames/bags are modular, so you can switch between bags on the same frame as you like.
Here are some Mystery Ranch specific hauls...