Ok guys, Dilemma here. Im getting a remmy 5r in .308. was gonna put a swarovski z6i 2.5x15x56 with illum. ballistic reticle. But due to finances, i am considering either a vortex razor 5x20x50, or a PST 4x16x50. I need to get my total price down to around 3 g's or so. how much difference in glass quality between these 2 scopes? price diff of about $1000.