I'd better leave the #83 Qs to somebody who's more experienced with it, but in general you work the #83 a lot longer than #80.
Generally, you won't inflict holograms with a PC. #80 won't cause them by PC but it might cause micromarring (that can perhaps look similar to holograms) if a) your paint is especially/unusually soft, b) you don't work the #80 long enough, or c) you press down too hard before the #80 starts to break down.
What it'll take to remove them depends on the paint and what's been done to it. I've removed them by hand (with PI-III RC) but Neoprufrok was unable to get them out of *his* Audi with a PC no matter *what* he tried.