I've been looking into glass for my custom build and just want solid glass for 800yds with at least 20x magnification. I've been looking at the Konus M-30 model 7281 6.5-25X44, mil dot illuminated reticle. I have also been looking at the Bushnell 4200 6x24 and the Leupold mark 11 6x18, I just...