i currently run a fixed 3x IOR scope with the BDC cammed elevation turret on my ar..i'm thinking of upgrading to a fixed 4x. i had a USO SN-4S in the past and was happy with the glass, so i thought a SN-12R might be a good idea..Whats the general consensus on these?.If i were to get one it would be with a cammed turret and the circle/chevron reticule..thanks to all who respond