This scope is going to be for my long ranger. I would like a Leupold custom shop scope. Is the Mark 4 worth the extra $300-400 over just building almost the same scope I want in a VX-3? people have mentioned the Mark 4 may have a little more edge clarity over the VX-3 but I really don't see it being that imperative for my application. The rifle will not be used for hunting so the higher power scope will be fine. I am actually considering the 8.5-25x50 asI do not have a spotting scope and I can basically be my own spotter. I like the amount of W&E adjustment in each and both scopes should get me to 1000 yds when practice makes perfect has revealed itself. Any info on either of these scopes would be fantastic.