I will add my signature to the above quoted statement from Dennis. I will also add that in my brief side by side comparison of the ZEN and EDG that the two stack up in a quite similar manner.
When it began to dawn on me how good the Promaster ELX ED and the ZEN ED really are (the Promaster has to be put in the discussion too as does the Hawke, although it seems to be that the Hawke is softer at the edge than the other two) I was in a quandary about actually coming out and saying how close the images seen were to the high end alpha binoculars. I could just hear laughter in the halls upon reading such a statement. But their image is what it is. That image is too close to call for the vast majority of folks who recreate with a binocular in their possession. That is the strength of this binocular.
I think there is room for discussion of the technical merits of optical design, the construction, the workmanship, company reputation and longevity, and even warranty and service issues. There has to be something that justifies the extortionist prices charged for these binoculars and the reason people pay it. Paying that difference based on image alone is no longer a valid alpha argument.
Actually, when we get to images of this general quality level, nothing really gets blown away by something else. Surely there are individual image preferences that will be profound for some people. But while I would not claim the ZEN blows away one of the alphas, the alpha cannot similarly blow the ZEN away either.
The Zen Ray's 8x43 ED blew my Nikon 8x32 L-XL's away there is no better way to describe the differences in view. Sorry! I just had to say that. I had my Nikon 8x32 SE's and the Zen Ray's 8x43 ED's out this morning since it was nice here in Colorado doing some birding and the Zen Ray's continue to impress me. They are really very ,very close to being as sharp as the Nikon's but their huge FOV just sets them apart. They are not quite as sharp as the Nikon's at the edge but their sweet spot is so big you really don't care. The focus is actually pretty smooth now. They are heavier than the SE's but quite well balanced. The view is just stunning! Remarkable for the price! I think I am going to buy some stock in Zen Ray! Wow! I can't wait till they get some mid-size binoculars out. I will be first in line to buy them!
Dennis