Televue 5mm t6 nagler - TeleVue Nagler 5.0mm Type 6 Eyepiece EN6-5

I replaced a UO 5mm Ortho with the 5mm Nagler T6. It seems every bit as sharp and if there is any less light throughput--I can't perceive it. The upside is enormous: much more generous eye relief; double the AFOV. But the best part is that stars are pinpoints right up to the edge of the field in my f5.6 refractor; granted fast refractors really test an eyepiece, but the Nagler outperformed various Plossls and Orthos in this regard.
Pros: sharp right to the edge, good eye relief
Cons: expensive

This review was written in the old system and had content requirements that are different than reviews written today.