I have many favorites. They all are good at something.
I like ZPC for white, and Menzerna/Optimum on darker cars.
I love Nattys/Blue Nattys,Souveran,Trade Secret,Collinite 845.
My fave sealants are ExP and FMJ.
The car wash(s) i really like are TOL BB,PB SSS, ONRWS