Here’s my tests for SSS, I used the multi-node SSS setup first, and then used the principled BSDF node, which has a diffuse color and a subsurface sytem built in.
SSS multi node setup:
Principled single node setup:
I did notice the principled setup creates a bit more noise, but admittedly I did mess around with other settings in the node as well so that may be why there’s so much noise! I’ll keep testing the principled node to see how I can get better results, because I like the way it does SSS a little better.