Looking at replacing the scope on my 270 win. I want to go to a mil-dot reticle and found a few that fit my price range. My shots will go to 800 yards. What kind of magnifaction do you guys like and why. The 2 scopes at the top of my list are the same except one is a 2.5-10 and the other is a 6-24. Which one should I get?