In the last year I have made the switch over to the Kahles 525i from a NF ATACR and a Vortex razor HD before that and I would never go back. I put a sun shades on it and also added the throw levels for adjusting focus and magnification ( bought these at B&H Photo which also sells the scopes). One of the things I love about my 525i is that my windage knob is on the left side of the scope instead of right, being a right-handed shooter it is sooo much easier to make adjustments. I thought I would mention this because it is a option that I haven't seen from others manufactures.What all do you like about it? I know that's a broad question but I'm leaning towards it or the kahles k525i at the moment going to research the ZC in a bit.