Wax....

Tell you the truth, I think all Carnuba Wax sucks for longevity no matter which manufacturer.

I used Meguiar's for many years, I even took a class from them back in the mid 80's when they had more than just wax and glaze.

I use the clay bar occasionally and a glaze when I need quick gloss, having a black car clean and shiny make me feel good..