I have tried my fair share some of the windshield coating. Here are some I thought didn’t perform well and didn’t like carpro 30 & 40, gyeon, glassparency, Kamikaze, glass science

Ones that did work for Either durability or moving water quickly were Gtech, H2Go, aquapel.

I have purchased Nexzett recently in March and applied it to family and my own and have been impressed. It is the fastest water shedding product I have used personally. What I notice as a good indicator is 30-35 mph water should be moving. Also if the smaller mini sized beads of water move and not just regular sized rain drops you have a good one.

200 ml for $30 and most importantly easy application.

I have a few videos but they are failing to up load. Nexzett has a few gems this, the inside detailer, ac vent cleaner and the shoe polish type product for rubber seals