Hi, I'm looking for a long range scope. I do have a mark 4 (4x14) and like it. The two scopes I'm looking at are the Leupold Mark 4 6.5-20x5 and the Nightforce SHV5-20x56 or C535. Are they apples to apples. I also just heard that leupold will no longer sell the mark 4 to civies starting real soon. So....which scope should I get ?Thanks in advance.