Since you said they will be for bowhunting only, I would avoid the higher power/magnification, which doesn’t really do much more for spotting game. The 8x or 8.5x will spot game equally well, and normally the resolution is better, so images are sharper and brighter. If you need the higher power to determine if an animal makes book before committing to a stalk, then you’d be better off with a spotting scope, tripod, and backpack to carry it in. Just MHO.
FWIW, 90% of all game is spotted at a distance with the MK 1, Mod 0 eyeball.