Hi, Stick -
Badger Stynylrez has been my exclusive one now for a couple of years, the gray one works best for me, black is OK, white is not so good. Some of it's good traits are:
It sticks very well.
Very durtable surface.
Sands well.
Really a smooth airbrushed surface.
I can spray straight from the bottle, but usually thin the last coat with 91% or distilled water.
Sorry, no info about 3D.
Best primer I have ever tried, highly recommended
Patrick