transtar for me! To bad you can't get it! It is the $hit! I just shot some shopline this sunday just to try it. Nope not for me! Very watered down! Had 2 runs where I don't get runs with transtar. I didn't change my spray habits on a side not should have but oh well it is just the wife's minivan! If you can't get transtar go with 2021. I sprayed it air dry in abooth and had no problems when I do it! Good luck