I have done coating to my car. And i used Ceramic Metal Oxide Coating from graphene. So far so good. Don't trust those advertise that 6H,,9H coating that can prevent scratches,stones chips. The purpose of of coating is just to keep your vehicle look shiny longer and protect your paint being oxidize under the direct sunlight. Coating the car also makes u clean your car easier. But after u coated, u need to maintain it, depends on the user that how he take care the car, like me every 6 month or so, will do a maintenance on my car coating to make sure that the paint is always in a well coated condition without any water mark or swelling on the paint.. For PPF wise, u can try Expel . if u got budget, u can wrap it full body, if not just wrap it the front parts of your vehicle and the door cards will be good enough. Is expensive to install PPF, but if u wanna use your car for long term, is worth to invest on it Just my 2 cents