Everbody here has given you good responses in my opinion. I've done a ton of experimenting with micromarring and a dual action polisher and can feel the biggest factor is the polish you are using, then pressure and pad choice. I find that the standard green foam which is both soft and porous doesn't gouge the abrasives into the paint so hard. When I last compared a variety of polishes on some soft black paint, I got significantly less micromarring with
PO106ff than with any other polish (but I didn't try the Ultrafina).