Hi all, I am weighing in a bit late; but just a couple of comments...
I use the 13mm Type 6 a lot in my f5 12": and it is terrific. The only drawback is the limited eye relief, but I can cope even with glasses on.
I tried the 19mm Panoptic a few years back, but I must have got a Friday afternoon one (made at 4.59pm for a 5pm close I reckon!). Given that it was billed in a number of reviews as "the best eyepiece ever made" it was VERY disappointing. It even had an air bubble in the glass! I sent it back and ended up getting an 18mm Radian at the time. I did look through a 24mm Panoptic, and it was a quantum jump over the 19mm! There was a fair bit of field curvature at the edges in both Panoptics though, and that put me off getting the 24: something I haven't noticed in the Radian or the Nagler.
Regarding the Ethos: I have compared the 13mm Ethos and the 13 mm Nagler head-to-head. The size difference is unbelievable! Both are brilliant eyepieces, but I will stick to the Nagler not only because of the price and the weight (it doesn't unbalance my dob), but also because I can't see the whole 100 degree Ethos field without moving my head around- and that doesn't really appeal...
Personally I think the Delos series have a lot going for them. Good eye relief, a good sized manageable field (no need to move the head around!) that is sharp to the edge- and a lot cheaper than the Ethos.
All in all though, sounds like a lot of fun making the decisions!
All the best,
- Dean
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