As i mentioned, i've only used my AR for plinking till now...i have 3 sets of optics on standby and don't have the time to test/ sight them all in. would you recommend a Leupold VXII-3X9X40mm with standard duplex reticle, Cheap UTG 3x9x32mm with mill dot reticle, or burris fullfield2 3x9x40mm...