I'm tired of collimating (don't try to talk me out of it), so I am going back to my first love of a refractor for DSO imaging.
I know I want an APO +/- of f/7, and in the 4" to 5" (100 -130mm) range.
My mount is an EQ6-R, and I have a permanent setup.
Of course I want to be closer to the 5" range, but I'm also not going to spend over $2k on the scope.
Most likely I will get a Moonlight focuser, so the stock focuser isn't a deciding factor for me.
Right now I'm leaning towards the AT130EDT.
I know this type of question is beat to death, but it is also one of the most helpful things to discuss openly.