I got these as a present for my wife that would be a comparable pair to my other (more expensive) Vortex 8x42 Diamondbacks. I'm afraid to say that these are, in many subtle ways, better. And while the Vortex's (which I really like BTW) are about $70-80 more, they are so strongly challenged by these Atlases, that I would not hesitate to recommend the Atlas Optic Radians as a viable alternative.
The differences are all minor but noticeable in controlled A-B comparisons. The Atlas's are slightly shorter, have a slightly brighter rendition of white in dim inside light, tighter lens caps, a narrower field of view, a slightly easier turning focus knob, and a slightly farther near focus than the Diamondbacks.
I am really impressed for the difference in cost between the two. Of course, had I not seen the differences, they would be very subtle and not that noticeable in field. So my question is, if you can barely see the difference, why pay more for this value and quality? I highly recommend these.