I have a Hyperion 13mm (same as Stratus 13 but not completely). The AFOV is 68° so normally it's enough. By the time Saturn has reached the other side of the field I'm able to make myself some tea. The only optical flaws it produces (and that I can detect) is a bit of astigmatism. But you can only see it in the most outer parts of the field. Another minor problem is the fogging up of the eye lens (probably my fault).
Anyway, it produces a mag of 115x on my dob so normally that's enough for most DSO's. Last night it was the most used EP for observing stuff. Pulled some nice galaxies out of my illuminated skies. I'm glad I choose this EP and not another one
(except for maybe a Nagler
)