I love that stuff. I've found that one layer by itself looks good, 2 look great and 3 is where it really starts looking amazing. I'll give my cars 3 or 4 coats in the fall and it will generally hold out till spring. It says something like 16 hours between coats but the results seem even better when I give it longer. Once I get a couple coats on there it feels odd washing the car because the wash mitt wants to just fly across the surface like there isn't any friction at all on it.
I find the results are noticeably better when I start with their precleaner but I'm guessing it is more of a glaze that fills in some before the top coat along with a bit of cleanup. The precleaner can be a bit of a pain to remove it you let it sit too long.
Their soap didn't blow me away, but mostly because there wasn't a lot of suds to it which may not mean anything.
It is expensive but a tiny bit goes a long way. I've managed to do an entire small car with just what was left around the bottom edges of the container.
I like the shine from it, to me it looks less like it is sitting on top of the paint like sealers tend to but is sharper than carnuba. Very clean shine without looking too much like a candy coating.
It seems to build depth faster than zaino, although its been 5+ years since I've used zaino.
