They-Vortex,have been doing pre-orders for the Viper PST ever since the SHOT show,it was supposed to come out sometime this year,I can't remember when! That's why I went with the Sightron SIII,I could not get anyone to confirm when the Viper PST would be available.
Hot Sauce,have you got to see a Sightron? I really am impressed with the two that I have,and the PST will have to be alot better before I would change scopes.
First focal plane reticles are nice for a mildot,but i have no problem doing the math for a Second focal plane,and it's easy to make a chart for the mildots at different magnifications that I use.