Today I processed a few shots I took in Barcelona last week, most of them at night as usual for me in my business trips. I used noise reduction quite a bit, as I had my Oly 12-40 with me, and shot often at ISO3200. I used DXO basic noise reduction and also Prime, I wonder: what is the rule of thumb on when to use Prime rather than the faster option? I don't care about the additional processing time, should I always prefer the Prime algorithm or is there situations where the faster option is better? thanks!