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Message: <blockquote data-quote="Can Popper" data-source="post: 1377221" data-attributes="member: 39163">Well, it wouldn't surprise me if the SWAN IS a rebadged Knight Owl.  If I recall, both are 5 element eyepieces with identical eyerelief and similar FOV.  And both are in the same price range and made in Asia.Guess your eyes just like the KO better...LOL.  One thing I'm wondering is the SWAN flat across the whole field?  Reason why I went with the Sieberts as opposed to the SWANs is that the SWANs lose clarity towards the edge from my observation while the Siebert Performance series are sharp across the whole field.There is another eyepiece that is similar to the Pentax XL that you originally wanted to get.  That's the Vixen LVW which the Stratus and Hyperions are knockoffs of.  The Vixen also use lanthanum glass like the Pentax and on CloudyNights reviews clearly bested its clone competitors the Hyperions and the Stratus being noted as having better glass and better coatings.You can get them here:<a href="http://yhst-1469288697390.stores.yahoo.net/vilvwlaey.html" target="_blank">http://yhst-1469288697390.stores.yahoo.net/vilvwlaey.html</a>And here is a guy offering to trade his on Astromart (note his comment on their quality):<a href="http://www.astromart.com/classifieds/details.asp?classified_id=605250" target="_blank">http://www.astromart.com/classifieds/details.asp?classified_id=605250</a></blockquote>