I'm doing my initial Zaino on my xB this weekend. How many ounces of polish should I mix up? The instructions say 1-2 oz. Should I use 1, 2, or inbetween? I'm leaning to 2, since a post by an xA owner used 1.5 for 3 coats. Zaino users, what do you think?

The max you can do is 3 coats of zaino per 24 hours.

I used 2.5 ounces on my xA for 3 coats. This includes the windows, wheels, and other areas.

If you're just going for the paint, I would recommend using 2-2.5 since the xB has a bit more area to cover.