Polyester Primers

I use 4+1 it is a direct to metal.It is a fairly new product haven't had any issues with it.Block it with 150 then 240 and 2k prime with jp202 ppg shopline.Both products are less than $100 each with all the fixins.I dp90 first,plastic repair,4+1,then 2k prime for a car that has been stripped.Spot work or rework I use the 4+1 instead of a glaze it air dries in 90 minutes to sand and seal over it.