Whitetail hunters I'm looking for your advice

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I'm in the market for a serious frame pack built for Midwest whitetail hunting — a setup that handles everything from a saddle platform and climbing sticks to bulky Sitka insulation layers (Ambient 200, Fanatic, etc.) and a full complement of accessories. My hunts push late into cold-season, so I don’t want compromises on volume, durability, or load-carrying capacity. Stability, organization, and comfort under weight are non-negotiable — I tend to pack in more than most, to make sure I’m prepared for anything. As of now, the packs on my radar are:

• Kifaru Manimal
• Kifaru Stryker XL
• Kifaru Hellbender
• Exo K4 5000

I’d appreciate input if you think any of these (or others) are a poor fit — and what might make a better all-around choice.