I have been using the Vortex Vipers on some rifles for a few years now. I was happy with them even when I paid $500 plus for them. So when Vortex ran this sale I have purchased 4 of the 6x20x44's.( What a steal!!) Two for friends rifles and two for my self. I love the dot reticle for gopher and Prairie dogs and have been dialing these scopes up and down with steller results. Typically I am using them for 500 yards and under but have taken a few longer pokes. No, they are not the scope my Nightforce NXS's are I have on my long range rifles, but I will take a Viper to any Leupold any day. In owning several Vipers for at least 3 years, I can say I have never had a failure. I can not say that about Leupold.
I too have a PST on order and I am anxious. But I will wait as I feel I owe it to a company that has provided me a very affordable option for some of my rifles and never sold me a lemon.
Just my 2 1/2 cents.