I too have both and I would also say if you are looking FFP I may lean to Vortex as I
Iike their reticle selection better. Otherwise Sightron to my eyes has better glass and while I have only had the Sightron a few weeks I have ran it to 1000 several times and back to zero and it tracks very well and always returns to zero.
I also ran the Sightron on a large vertical target at 100 yards with a plumb line. I shot a dot then dialed 30MOA and measured how much elevation I gained. It should have been 31.41 and my bullet hole was 32 so really with a 1/2 inch shooting rifle its within the margin of error. I was mainly checking to see if I had the scope/ rifle bubble level good and it was as it followed the line up and back down for two shots. Second shot I dialed 25 MOA and again tracked good.
"Anyone taking up handloading necessarily plays with unknown factors and takes chances. But so does anyone who drives a car,goes to a cocktail party,eats in a restaurant,or gets married."
Jack O'Connor 1963