Quick question regarding sealant/waxes

nandosman

After some reading, I decided to go with Meguiar's M21 Synthetic Sealant to put after cleaning and polishing my car.

I have seen some folks claim that it shouldn't be used because M21 is a "cleaner wax". I have no idea what this means, or what the difference between the so called "cleaner wax" and "finishing wax" is.

Some other folks mention using something else on top of the M21, like a wax or something. Do I really need to add something else?

Bonus Question: I saw the Junkman using some Zaino Z6 after applying some sealant/wax on one of his videos, but I'm not entirely sure what it does (the site is not clear), or if it's something needed?

__________________
FI Non-Res Test Pipes | FI 18" Res CBE | Stillen Gen 3 CAI | Dynotuned @ Dynosty EcuTek 325 whp