I don't have a Diamondback scope, but I have 3 Vipers. One 2.5-10x, and two 4-16x, scopes. Very nice optics for the price. I did have one of the 4-16x(HS-T MRAD) scopes come from a vendor with the side parallax adjust stuck solid. I called Vortex, they e-mailed me a overnight pre-paid shipping label, I shipped it in the box the vendor shipped to me, and had it back in my hands, repaired two days later. Needless to say, I was impressed.
So I will be buying more Vortex optics. My wife has a set of Diamondback 10x42 binocs. She really likes them.
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