Type of paint?

The Deltron is PPG's better line of paint products.

The Shopline, I believe, is now replacing the Omni line.

I don't personally use PPG, but it's about the same as Dupont or any other major brand when it comes to pricing. When you use the lower priced line of paint, such as Shopline or Omni, you'll probably use quite a bit more paint to get the same coverage as you would with the more expensive Deltron. But a lot of that will depend on the color you're spraying. Some colors give much better coverage than others, for example, you can probably spray 2 coats of black then clearcoat, but with a cheaper line of paint, something like yellow or red, that both have poor coverage, it may take considerably more coats and materials to get proper coverage. Personally, I think I'd use the Deltron base then go with the Omni or Shopline clear.