Semi, my time behind the PST is limited, but it is far better than the Burris Signature I was running on it. I love this reticle and so far the clicks were dead on at 100yds. I reset the knobs last night, but got too busy to see how much elevation MOA I have left in the scope. I also need to contact Vortex about additional shims for the zero stop, I used them all up and came up short. Clarity was very good and eye relief wasn't a problem for me. I have no experience with the Sightron scopes, so can't offer a comparison.