Awesome, HD speed is my go to for doing freebies for my good friends and family. It always feels good to make them happy and they usually end up buying you dinner :D
I just did a black S550 not too long ago. MF cutting discs with compound followed by a foam polishing pad and fine polish did it for me. Even if the defects are light on your job, I don't think the white pad and 3800 will provide enough cut. Given what you have, I would try the orange pads and...
Amazing review Joe! I'll definitely give this stuff a try. I wonder if Nick could get something in the works like HydroFoam as well. I'd love to use it for maintenance washes.