Has anyone had a side by side with the standard Vortex Viper and the Vortex Viper PST? Of course I know the PST has the matching target turrets, illuminated reticle, option of FFP and nicer reticle but how about glass quality? Is the glass that much better on the PST? Clearer, crisper, better color? Lets say for example the 6-24, how much are the normal Viper owners losing out in glass quality by not being in the never ending backorder line for the PST?