RE: Rangefinders w/ ARC etc.???
Not for bowhunting, unless you're shooting down a cliff !
I hunt between 20-35' high. When I range the bse of a tree from my stand, then range level across- the difference is generally a half yard(even at 40yards). Not really a big deal.
A deer standing at 35yards, I will aim at dead on with my 30yard pin(not counting "drop" compensation).
For solid projectile, firearms hunting- it is a valuable tool for those hunters that may encounter along range shot andare unableprocess the ballistic formula in their minds.
I mostly bowhunt, but do head out with a firearm for some spot and stalk. My rangefinder does not have ARC, but I also understand the ballistics of MY weapon, so it's not needed.
Like said before- if you're buying a new rangefinder and it wont break the bank to purchase a unit with ARC, then just do it. It sure isnt going to hurt.