I am picking up a 24' 1-8 upper for my ar in .223 and i would like some advise on a scope. i was looking at a burris fullfield 2 tac in od green and a bushnell elite 4200. the burris is 4.5-14 and the bushnell is 4-16. i am mostly paper punching and would like stay in this mag range. also i can get these scopes for about $400 so i would like to stay in this price range also. if you have any advise please let me know.