I've called the Refractor Forum the APO Forum... (and the Reflector Forum may as well be the DOB Forum) I would think that vintage achromatic refractors would have a safe harbor on the Classics Forum...
I understand folks collecting achromatics while preferring to use their APOs: How often do I use my antique Mogey 3 versus my Astro Optical?
And I agree with Chuck: If you want a true APO, use a Reflector. So it seems we're talking about degrees of tolerance for CA / false color. My AO has less than my Mogey, but more than my fluorite.
As for my Dakin 4, the first view that popped in my head that I prefer over the 102ED is the Double Cluster. I don't care that the individual stars aren't natural, they are microscopic yet brilliant, and the way the Dakin frames the view is picture-perfect to me.
On Topic: During the first cleaning, I saw that the C102 as only 2 baffles in the tube, while the Dakin 4 has that modular baffle system. I predict that the background sky will be noticeably darker in the Dakin. As for lens quality, we'll see.