Some things have already been mentioned here. What convinced me to use the Superfly renderer exclusively is the rendering speed of Poser 12. In Poser 11, the SF renderer was a lame duck and I only worked with the Firefly renderer. Since Poser 12, I have not used the FF renderer. Add to that the use of the Cycles nodes. Since I have worked a lot with Blender, I see this as a big advantage for me. To which there is a wealth of information and examples of Cycles material on the internet. Well, not everything can be implemented yet, because nodes are still missing, but I think the Poser developers are on the right track here.

Greetings

Translated with www.DeepL.com/Translator (free version)