Are there different names for the same ceramic coatings? What are their names? Which is the best ceramic coating, why, and what should you expect to pay for coating the entire car including wheels? I've seen advertisements for F-11, Opti Coat, etc. some say only professional application and others say you can do it yourself -- so confusing. I'd like to use it and I've done a google search to learn more, but I still don't know what to ask for.