I'm partial to the Sightron SIII,I have 5 of the 6-24x50 scopes,and they are a steal for the quality of the product you get. I really like the MOA-2 reticle,it's a great target shooting reticle.But I like hunting with the LRMD reticle,you can see the reticle better in a busy background.
The Viper PST is a good scope,but IMO,the glass isn't as clear as the Sightron. Vortex does offer FFP and SFP reticles and a few other extras that Sightron doesn't,but I will always take better quality lenses over the extras that Vortex offers.
Leupold has good scopes,but they cost about 3x what they are actually worth. I'll take a Sightron SII or SIII or a top end Weaver over a Leupold scope anyday.Leupold lost my business many years ago. Their warranty isn't any better than any of these other brands,they all have lifetime warranties on their products.
Texas State Rifle Association
North American Hunting Club