I have all three of the above, NightForce NXS and ATACR, Razor and the SS 5-20. The ATACR is totally out of the league of the other three. Of the NXS, SS and Razor I place then in that order. I am the odd ball that likes the SS over the Razor, as most here go with the Razor way above the SS. I have an SS that seems to have none of the issues others seem to have. The turrets line up perfectly, the illumination is excellent (one nice clear dot in the center) and the parallax adjustment is not stiff at all. I like the glass better on the SS but the Razor glass is actually better then the NXS, and is very very good. The SS lacks the zero stop but I don't find that much of an issue, great feature but not a deal breaker. The Razor is BIG, for sure, but when it is sitting on my FN SPR it does not look out of place. And I too like the recital.
Sully