I wasn't impressed with ZCS on paintwork, but it works a treat on alloys.
Z8 is awesome, what is already on your car?
the Z-CS is for protection details, not for my own car. Just put it on my mums car yesterday came out looking really good. Just topped it off with Z8 to finish it off.
I've currently got werkstat acrylic triplets on my car, goin to top it with Z8 to see if it gives it some extra bling