Enlarging PRP doesn't always help

Genuine question, not posing as argumentative or anything negative-have you (or anyone else on here) tested different finishes?

The follow up, and actual nature of my question is specific to the ribbed CNC finish vs a smoothed surface. Have you ever done before and after of flowing a CNC surface, then smoothing it out to see effects? I would suspect that not many people would risk (or pay for) the chance of losing flow…but needed to ask. I have a set of CNC heads and have wondered what having them hand finished would do.

A BIG thanks to all of you for your continued shares of information!!! I don’t see these kinds of discussion elsewhere.
Good question. Hopefully one of the experts will jump in here.