Re: pst or vx3??
Naturally, it depends on what you want to accomplish with the scope and I can't speak directly to the VX-3, but I have both the Mark 4 4.5 - 14 X 50 LRT M1 illuminated TMR and the PST 6 - 24 X 50 with the MOA reticle. They are close but I like the glass on the PST better than the Mark 4. The PST does have a zero stop but it is done with shims and I didn't even have enough shims with the scope until I put a 20 moa rail under it. I would take the PST over the Mark 4 if push came to shove but that is with the tactical turrets. If you are hunting you might want a lower turret like the VX-3 but you would want it to be the "long range" version with the side parallax adjustment. Again, it depends on the application.