My first experience with the Viper PST was great. I was looking at the Leupold LR, but the cost was nearly double. My son found the PST. I couldn't really tell the difference when comparing the two, so I took the plunge, saved enough, nearly, for a second scope and have never looked back. The reticles are fine enough for accurate shooting close in or at a distance. I have the SFP (Second Focal Plane) model so I use a ballistic calculator instead of trying to read distances by using the milling reticle ( the likely reason one reviewer couldn't get his scope to work consistently). I have never had the slightest variation in zero and the CRS Zero-stop works quite well, though I'd really like to see a full zero stop. I have this scope on two of my rifles and both perform superbly. I recently sent one of my PST outfitted guns in to Teludyne Tech to have some work done on it and they, too, were impressed with the clarity and quality of the build. Can't say enough good about this scope and will have a Vortex on any newly acquired weapon I procure in the future. A real winner.
Pros: Clear glass, repeatable accurate click adjustments, tough as nails, best warranty in the business... EVERYTHING
Cons: Don't own enough of them.
This review was written in the old system and had content requirements that are different than reviews written today.