Thank you. The only one I have used is seal n shine and was impressed by its longevity. Ive been watching reviews on youtube and its funny how different reviewers choose different products.Prior to Cquartz I’ve used Meguiars Hybrid Ceramic & Turtle Wax Hybrid Ceramic spray. I recommend the Turtle Wax Hybrid Ceramic Spray out of the two. I feel like the Turtle Wax one was easier to apply, had higher gloss and better hydro properties. As far as longevity goes, it mainly depends on your environment. It only lasted for a couple months for me. The Meguiars one only lasted about a month or so. Good enough for a cheap spray. When applying the products, always remember a little goes a long way. No need to spray a lot.