i will be buying a new scope later today or tomorrow for a new rifle & would like some advice. I’m looking at the leupold vx5 3x15x56 cds or a Leica er 4x20x50 with magnum ballistic reticle that’s a demo scope. I own a vx5 3x15x56 so I know how it is but not the Leica. How’s the glass on the er models? Depending on which I get it will either be going on my 7 rem mag build or a 264 win mag build. The Leica demo is $50 cheaper than a new vx5.