I had the PST 1-4 and like posted above the reticle started rotating the first day I shot it. I also owned the Razor 1-6 which was a nice optic, the reticle was meh. But it was built very well. I will never buy a low end Vortex again, nor would I recommend one. Out of 5 friends who have or have owned a Vortex optic, all 5 of them had, had to send them back for service. One of which being a Gen I Razor. I haven't had any problems with my Nightforce, Leupold, ELCAN or Aimpoint optics.
Hopefully Vortex can start reducing their problems in the near future because they are not a bad company.