As you all may know I am an advocate of the Army Painter Dip. However I have never been 100% happy with the results obtained on vehicles in particular 20mm eg Airfix. I have found that Devlin mud , diluted with water and a drop of flow enhancer does the trick and provides a great "pin wash" .
So my vote goes for Troops - Army Painter Dip with a coat of Dulcote/Matt Varnish
For Vehicles- Devlin Mud wash.

