I did try the NB over Zaino. I applied NB to my trunk and i could see a noticeable difference in wetness. In fact, I liked the look so much, i put one coat over the entire car. It seemed to take away some of the slickness of the Z, but was still very smooth. Then, last saturday, i was bored and decided to tear down everything on the car and start over. So, I polished with SSR2.5/SSR1, followed by EX-P and then topped with NB. Very nice look. I like the look better than the Z. The Z was very shiny and reflective, but the new combo seems to darken the paint with more gloss and more metalflake pop. I have since added 2 more coats of NB and am very pleased. I'm sure the durability is not where it was with the Z, but I don't mind topping every month or so. Good luck with yours!