yes ive found no problems with quality once you get them set to suit your by using the diopter and the +/- adjuster
yes the amd is a finer ret than the scb2 but you can alter this by again setting up the eye adjustment correctly it took me a good month to get to what i wanted also like with a conventunal scope you need to get the scope in the right place and get your eye in the same place every time
ive got one on and early hw100 which i struggle with but the one ive got on a later stocked version is spot on its eye position this scope eleminate paralax error big time but not 100%
give it another go and play with the scope alter the adjustments and when your happy black insulation tape the diopter to the setting you want as it moves
this for me is the only drawback
these scope are like marmite
wayne