Good article. I have been using the Zymol (cheap stuff) for a few months now and really like the way it makes the paint look richer and deeper. Never could nut-up for the expensive stuff and now I think I'll just be happy with Zymol
I will stick to Zaino. The cost isnt that bad, you use a small amount of Zaino at a time so a bottle lasts a long time. Its also very easy to apply and durable. If you prep the paint properly before applying any decent product will do a great job, it becomes a personal preference.