Oh yeah, can't forget the polishers in my arsenal.
- Porter Cable 7428 Rotary
- Porter Cable 7336 Random Orbital
- Ultimate Detailing Machine Random Orbital
If you are looking to do some serious paint correction (read: swirl removal), you will have to invest in one of those machines, plus pads and polish.
As for polishes, I have used the following with no problem on different vehicles:
Menzerna
Autoglym
Poorboys (SSR Series)
I also have Polycharged my Klasse and tried it on a friend's GMC Sierra. Does add depth.