From what I have heard it's the same exact scope minus the reticle. I have looked through both at one point or another and they are excellent value.
I think I slightly prefer the reticle of the Vortex though because I like a finer point of aim to instead of the slightly larger dot of the PA 1-6x. Can't go wrong either way though! Both great companies with great customer service.
Texas A&M Class of 2011