Originally Posted by
SomeOtherGuy
The Viper PST has illumination, more magnification, a nicer reticle, and mil turrets to go with the mil reticle.
I have the 3-15x50 Weaver Tactical and the 2.5-10x44 Viper PST (not an apples to apples comparison), and looking at just these I like the Viper turrets and reticle a little better, but find the Weaver's glass clarity significantly better, and it also feels more rugged.
At the price point of the FFP Viper PST 6-24, you really should look at the SWFA SS 5-20.