nice post Marc
yes topaz ai is an interesting one, results vary wildly on deep sky and planetary, i have dabbled in some experimental work in it. if one chooses to use it, - if you are only after a pretty picture i think you still need to make sure you scrutinise before and after to ensure it is realistic. once you have used it a few times you can spot topaz very easily, especially when liberally applied.
and especially thank you for posting the D Peach video - i think my planetary processing will now be 15% the time it used to be ...
cheers