I am getting a Barrett 82CQ. I can shoot out to 600y at my range and twice a year they open it up to 1000yards. The Barrett currently has a Leupold Mark 4 LR/T, 4.5-14x on top.(mounted by Barrett) I really like the USO ST10 or SN-3. I haven't used any Leupold Mark 4 scopes before. Any opinions on the Leupold, should I change to USO. Is the Leupold in the same category as the USO?