Quote:
Originally Posted by bytor666
"Improved planetary performance"
Well, first this has to be proved. I've been told other certain eyepieces do this as well, and tried them. Can't say I saw any improved performance at all, plus 62 degrees compared to 70 won't be cutting it for me. 
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Definitely not a "replace" option for me...why I specified it as a supplement. As far as proving, well each of us needs to prove it individually. The reason is that we all have different optical chains and the optical chain will very much affect whether planetary performance of a particular component, like an eyepiece, will be of impact. So a complete optical chain is like any complex multivariate system, and different components will have different sensitivities to the outcome depending on the exact contribution/specifications of individual components.
In my case, I optimize my optical chains as much as possible specifically for planetary observing, and for me I have very much proven the DeLites best the XWs. XWs are good in this respect, but it is not difficult to best best them on planetary IMO. A good quality Ortho will and a top tier Ortho does it with ease (i.e., ZAO level). So in my optical chain, the DeLites were performing as good if not a touch better than the "good quality Ortho" level, so I want them on hand as a comfortable alternative to a level better performance than my XWs on planetary. But for DSO work noting trumps AFOV IMO so XWs are going no place...just having a few friends added when the come off the production line