Pentax XW 40mm

Hello All,

I've tried to find an affordable maximum-field 2" eyepiece. It seems that I
either get field curvature or astigmatism in the ones I've used, even at f8
and higher. These include the Widescan III, the MK-70 and the Pentax XL
40mm. So, maybe its time to try a more complex design.
I'm thinking the 40mm XW is the next step up. Agreed? Have you tried it or
know of a decenty review?

Thanks,
Ed T.