I have, like, and use Zaino. So this is nothing to do with that. Only that a statement saying why use anything else if you have the best is too general imo - it may be the best for YOU iyo. But, I use other products too because I feel that they are sometimes better for ME imo (eg. on my black car, if I use a sealant without a caruaba topper, I personally favor DG 105 or WG).
That is the great thing about a forum and the OP question - this way we can help narrow down the options and maybe he would then try a couple and come up with his own favorite. Again prep makes everything look great

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