I finally got around to using this stuff. I spent the whole day yesterday taking off the old wax (which I seriously don't think there was any of left), claying the car, washing again, then applying the zaino products.
My thoughts:
I clayed the car... but don't feel like I really picked anything up with it? Can you lube the paint too much and make the clay bar ineffective? I seriously doubt my car's paint was that free of contaminants.
I'm still not sure how the ZFX thing works. In the instructions it kept referring to the product names by their code (Z#, etc), but the bottles themselves only have the product name, which made finding the right bottle difficult and really frustrating. Hah. I quickly gave up on that.
I later found out what product was what by reading the back of the bottles. Oh well.
After the 2nd wash, I applied Z2 and let it dry inside the garage for about an hour or so. It was really, really, difficult to get off. The initial wipe would get rid of most of it... but if you were to angle your POV on the paint you would still see fine smudges on the paint. I was able to get some off by wiping with a good amount of pressure on the paint. But I thought, this can't be right... so I wiped back and forth for a good amount of time over the entire car to try and wipe off as much as I could. Got most of it... but not all.
So I went ahead and put on Z5. That thing smells nice for the first 2 minutes. Then it kind of gets to you. Hahah

But that went on easy. I let that dry for about an hour also. It came off real easy. And I think it might have taken some of the stuck Z2 along with it.
Then I finished off with Z6.
The car looks great. Very shiny. I can still see some of the fine scratches on the paint... but only if you're looking for them.
I'll have another go with maybe 2 more coats of Z5 today with Z6 in between coats. And clean up the interior bits, too.
Once this is all set and done.... I can just wash the car whenever it gets dirty and have no need to apply Z2, Z5, and Z6 unless I wanted to?
How do you guys handle the paint in the cabin?
Overall I'm happy with the results. Although it's been a while since I've been able to spend time to wash the car like I used to (I lived in an apt complex that did not allow the washing of cars) so I can't really tell if it's anymore shiny/glossy than the stuff I used previously.