Frank, I wish I had some real answers for you, but I will say this, I've talked for a few hours with Rich the owner and he has really impressed me with his level and understanding of the chemistry behind it all and seems he's been developing his Gloss It line for at least the last 10 years and just now coming out publicly with it all as it has just taken him that many years of tweeking and trial and error to perfect what he wanted in his line.
I don't know first hand that it's better then Zaino, but I am going to try a his line out and see what happens. Hard to beat the durability of Zaino, but he told me he can match the durability of Zaino as well as produce a better looking finish when comparing side by side Z2 and his Gloss It sealant?? Says he has the durability of Zaino but with the glassy wet look of a polymer sealant as well as the depth and warmth of a carnuaba..... sounds too good to be true if you ask me, I can't wait to try them out.
I do know a highly respected and known DFW detailer who was once a Zaino exclusive detailer who has switched over to the Gloss It line, but that doesn't mean anything to me, seeing is believing.
Don't know if this info helps or not,
Josh