Some of what I'm after has been touched on in other threads but if given a budget of, say, $500, what would you coyote callers go for. Less is more of course if it is good.

I've been a spot-and-stalk-Hunter exclusively but that requires snow which is not always present in sufficient quantities to make spotting easy so wishing to expand my opportunities, I'm looking for, 1) ease and simplicity of operation and reliability in negative digit temps and 2) long range capabilities.

Does a decoy help that much? Thanks for your responses.

Tell me of your experiences.