on using the sonus SFX line of polishes and pads. I only used the SFX2 and SFX3 but I was wishing I would have used the more aggressive cut. I sealed it up with 2 coats of poorboys EFX thanks to glimmerglassdetailing.com and put 2 coats of S100 on 24 hours later.I think next time I will try using the SFX2 pad and SFX1 polish to remove some of the more stubborn defects. All in all I was really suprised by how easy it was to use and how good the results were. My NA DD is cherry pearl red and has a rather crappy paint job which I managed to make look like glass.