Not to detract from this interesting discussion, but hborre's physical surface configuration works well for those of us still using V4 and firefly renders. This image is a SASHA character with V4 Wild hair, a Biscuit's' cap, and Mandy Hair bangs. The color differentiation is due to my not yet merging all the textures. But that aside, the Firefly render exceeds what I had previously. So, thanks to all who contributed here.