PPG all the way! I use the DBC base coats, and 2021 for the clear. I am painting 2 Bobcats right now and after you get the hang of spraying the clearcoat it is almost goof proof. I am spraying with an HVLP detail gun (Walcom STM) and get fantastic results. If you have a scale plane you can also add a flattening agent to the 2021. I can't remember the number off the top of my head.