I don't care about Superfly either. Don't like its slowness (even with a modern graphics card) and especially don't like the weird preview.

Besides, if you want 100% photorealism, you actually need a mesh that is 100% photorealistically sculpted. (Which none of the available Poser/DAZ meshes is, anyway)

So I rather go for speed. The P4 renderer WAS fast, and the Firefly renderer WAS slow.

But I had 15 or so years to learn how to get the most out of it:

Here are two of my "Casuals" in one of my basic 3-Light settings:

Preview:

Render 4.6 sec:

Render 8 sec:

Here my render settings:

As I said, not going for photorealism. I try to safely stay "this" side of the uncanny Valley, going for a "unique" Poser look that pleases me instead of trying to keep up with the "professionals".