My black (040) 1982 300sd is in the body shop for a complete repaint and I have a few questions that were posed to me by the painter.

First, he uses PPG products and told me that PPG's Omni line is less expensive than their Deltron line if I want to say a few dollars. I've read, and correct me if I'm wrong, that the Deltron line has more solids and hence covers better? Does this make it more fade resistant over the Omni line? I've also read that with a BC/CC the important thing is a high quality, high solids clear over the base. Is this true and is the PPG Deltron Clear a good, high solids clear?

So, with that being said and with the Omni line less expensive, will it hold up as long as the Deltron line? I understand it may take more of the Omni to cover the same amount of area, but what is most important to me is that the paint doesn't "fade out" in a few years. Or, is it the quality of the clear coat that I should be more concerned with?

Last question, has anyone used a paint code other than the Mercedes 040 black that matches?