I use 7x42 binos. I find them a bit much treestand hunting in OH, but not quite enough hunting antelope in MT's open country. If I were looking for open country binos, I would be looking for 10x42-50'd made by Pentax, Minox, or Nikon. Mine are a Bushnell Elite, which is good too.
I have used a spotting scope hunting, but usually to clarify what is in a herd in case of trophy quality. I find binos better in most hunting conditions. Spotting scopes excel when glassing off a cliff at game 600 yds to a couple miles away.