[Zeke]

You can't really 'cut' with a DA. However, cutting is for the experienced. Cutting exposes a new surface free of oxidation. Sanding removes more getting the surface imperfections out and flattening the surface. By that I mean orange peel.

For most of us, a cleaner/wax is plenty sufficient. Used frequently it will do a good job safely.

I've been down every one of these paths and unless you have a show car and NEVER wash it, the complete sanding and multi step polishing method will be wasted in 3 months. And it costs a lot of money to have all the products on hand. Aside from 2-3 different machines, the micro fiber cloths, sand paper, compounds and waxes is well into the $200 bracket. Add in really good machines and you need a grand to just wet your feet.

Is it worth it? IDK because I don't spend that kind of money nor do I go for full show car finish and I get compliments daily.

On a truck.