Some of their paint polishes and waxes are pretty meh. I know they have better stuff for commercial use in body shops but I'd rather buy Mother's or Meguiars.
Professional use, body shops; 3M™ Perfect-It™ Rubbing Compound #5983, Perfect-It™ Foam Polishing Pad Glaze #5996.
Nothing compares to this system, I have been using it for about 30 years. Anything else is just wasting time and money. There is a reason every professional body shop uses this system. Everything 3M I have used is top notch.