Re: If FREE to you, which one would you choose?
Of the 3.....NF. Why? because they are VERY sturdy and reliable. I've seen better glass but as an overall working system, they rock.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.