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Message: <blockquote data-quote="WJC" data-source="post: 3649617" data-attributes="member: 25191">Hi, Rabbix:There is no doubt that even such an infinitesimal scratch will affect resale value—especially to the irrational optical nitnoid. And, I know people on BirdForum change expensive binoculars as often as some people change underwear. However, you need to decide whether you bought the binocular to sell or use. It is a world-class instrument. Over the next 20 years, there will be innumerable advances in optics to cause part of the herd to cry “lo here” and others to cry “lo there.” However, if you are the average observer during that 20-year period, you probably won’t be able to recognize $10 worth of difference in the lot.I got a letter, today, from Dr. Dick Buchroeder of Optical Design Service of Tucson who has been critically testing the extremely expensive Nikon WX 7x50. He recognized an advantage for daytime observations, over the Navy Mk41 of the early 1940s, due to improvements in glass and coatings. But, he saw no appreciable improvement over the Mk 41 7x50 of 80 years ago for astronomy.Talk is cheap; good products are not. But, YOU must be happy with YOUR decision. :cat:Bill</blockquote>