I mix nason and dupont at work. Dupont has a better selection of pearls and will match alot better on repair jobs. There is not many colors that you can mix in dupont that you can't mix in nason. Mostly just tri-coats. For an overall job I would go with ful-thane or nason base clear. Just my opinion. That is what I'm going to paint my truck with. As for Chromapremier I have never mixed it nor had any ever ask for it.
