I have a bunch of Games Workshop miniatures I had to build and paint myself. Mine are all either plastic or a lead free white metal, in what's called a "heroic" 28mm scale. What do you do with your mini's? Display them? Make dioramas?
I actually play a game with mine called Warhammer 40k so the paint job doesn't last as long as it should unless I spray a hardcoat on top first.

I'll put some of my pics up as soon as I can dig them out to scan.