Guess it depends what you are willing to spend on it. Zeiss V4 is reasonably priced, there are a bunch of good scopes in the 1500-2500 range that can run pretty hard against some more expensive stuff. I have a Delta Stryker on mine, also own a Tract. Have a Sightron, find the X-hairs maybe a bit thick, but, it works well enough. Hard to say what Swaro is doing, supposed to be new lines coming out at SHOT. I'd maybe look at Trijicon as well. Whole bunch of scopes with similar features out there, for me, mostly came down to the reticles.