Actually Zaino is not a wax. It is a Polish that contains no wax or silicone oils.Zaino is a wax.
Rejex is a dirt/chemical/water repellent.
I was surprised by how much easier rejex is to use... I'm impressed with the reject shine and two coats was effortless. I put the coats on the windows as well. But I've not had the car long enough to know how well it compares yet, and whether the Windows was a good idea.
... One thing I wonder is can I use the Grand Finale spray shield over the rejex.
... Will it add more protection while cleaning easily and without harming or lessening the effect of the rejex? Or am I downgrading the regex finish to use the detailing spray, Grand Finale.