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Jerry,
I was trying to apply some generalisations that a beginner could follow. I think your making it a bit confusing for someone buying their first telescope and eyepieces.
Regardless of the F-Ratio of the telescope a good quality eyepiece will always outperform a poor quality eyepiece, even in slow systems like F15 Maks or Achromats. In a slow system the difference between a good eyepiece and a bad eyepiece is not as pronounced, but it is readily visible to an experienced observer.
Nothing much has changed in regard to quality either, generally a good eyepiece costs more than a bad one. I own a full set of UO HD orthos, as well as about $6k worth of Naglers and Pentax XW's. The ortho's give excellent image quality on axis, but eye relief is tight and the AFOV narrow at 45 deg. What does the $450 Pentax XW give you over the $100 ortho? 20mm of eye relief and a 70 deg AFOV, in other words a considerably more comfortable and pleasing view. ie. You get what you pay for. I don't know that we need to start confusing the poor guy worrying about visible coma in an F4 system using an 82 deg AFOV eyepiece. Especially considering he isn't likely to buy a 16"/F4 newtonian or a $1,000 Nagler. BTW there are no Naglers that cost $1,000, the most expensive is $929 and that will soon drop with the improving exchange rate. There are 4 that cost over $600 and 17 that cost less than $600.
CS-John B
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