I reprocessed the image I attached in my previous post
XD left, DP right
DeepPrime XD indeed has improved since that EA in June. The neck is a lot less spotty and overall the images looks just as good (or bad) with XD as with DeepPrime. I would even say that the neck is slightly smoother with XD.
This shot was underexposed too much in camera, beyond the point that I could correct it decently in post without it getting extremely noisy. Most of the detail is lost already, but is was (and still is) a good test for NR to see what it can make of it