Well, to update this old thread, the Northgroup ED127 turned out to be OK - but I traded it off for a simply superb OLD Vixen R200SS astrograph. Even visually it ROMPS all over the ED127.
And to keep the quality optics coming, I DID buy the Vixen FL102 in the end - should be here Monday

Several well known and VERY respected/knowledgeable astronomers told me BUY IT, or they would. I trusted their opinion

I will try it for astrophotography, but more likely it will end up my visual scope, with the R200SS and the ED80 being the photo crew. I have a Televue and Orion refractor focal reducer to give it a jolly good shot anyway.
yes, FINALLY I am content and HAPPY with the gear I have. FINALLY. And being vixen for the majority, I can settle on commonality with their odd 60mm system between scopes., as well as running standard 2" if I want too with the step-down ring.