Originally Posted By: liliysdad"Glass Quality" is a subjective issue, and is honestly one of the least important facets of a quality scope.
In my limited experience over the past many decades, I've always found the "Alpha Glass" AKA Quality Glass etc - to be the very best of the best on the current market relative to color, clarity, contrast, brightness etc - of course, not everyone's eyes are the same, so people will have different opinions of the various models.
When you pay top-dollar for Alpha Glass, you expect it to last a lifetime and on average, the vast majority do. You might hear of some horror stories of coatings failing from early models with the upgraded version taking care of "the problem" but the company didn't stand behind the "defective" item. Those events are unfortunate but did happen to a few Alpha models. I will say you will probably never hear of Swarovski customer service treating you in that manner.
You do get what you pay for in optics but you can purchase extremely good optics at less than "premium" prices - it all comes down to how much you're willing to spend on optics, when considering what your expectation are from that particular optical item. Most people never get a chance at looking through a $2,500 scope/binocular and a $300/$400 scope/binocular side by side when out in Nature or at a shooting match where that optic is intended to be used. Those that have, KNOW the difference in QUALITY - the only problem then comes down to "In their opinion, do my "needs" demand the difference and/or can I afford it."