So my problem is do I want a new scope with a fixed AO or one with a AO but having the adjusting knob on the opposite side of the windage turret. Are the AO with the adjustment opposite of the elevation turret easy to use and quicker then the ones mounted on the objective lens? Seeing my longest shooting distance is 50 yards or so, do i really need a OA? Are scopes with a fixed 100 yard parallax OK with a shooting range of 10 - 50 yards? The following links are to a couple Leapers scope I am looking at