Cheers Astro. You are a wealth of knowledge
my scope is f4.4 so def on the fast side. I have the Baader Coma Corrector which claims being find down to F3.5 I think. That should make the Wide Field eyepieces fine.
You are quite right on the EP not needing to be 2". I guess I was only really thinking of one more and the 31" nagler is suppose to work better at 2 due to the field stop (can't recall measurement)
Do you think there would be anything better for the combo with the Coma Corrector and the Powermate. I'm thinking above and below the Zoom would make sense which the 31" would achieve. The 21 ethos would be too much zoom with the PM and wouldn't get as a wide a view as the Nagler.