Recently I just bought HD speed and with my Porter Cable with anorange pad I did the entire car yesterday. Results for excellent really happy with how easy it was to apply and remove. It's on an Audi A3 white I wasn't too concerned with any corrections considering the paint was fairly new and honestly I don't have the time to polish for two days straight HD speed was perfect for my car. My only question now is what could I top it with? I do have collinite 845 but I recently just saw in my local AutoZone had Sonax Net Shield. Who has had experience with this and is it worth my time applying considering the application I hear someone annoying. Let me hear your thoughts on if Sonax is worth it and it's durability? Thanks guys I'm really enjoying my old hobby once again