I've been customizing both figures and vehicles for many years, and I only ever use Humbrol or Revell enamel paints, or sometimes for large vehicles I'll use automotive matt black or grey spray paint. Enamels are much tougher than acrylics once dry, although the mineral turpentine clean up is a pain. The current Revell "semi-matt" range dries to a finish virtually identical to the factory paint used on Joes. The few times I have tried acrylics I have always found chipping to be a problem. Some of my customs are more than twenty years old, and the enamel paint still looks as good today as when it was first applied.
