I guess it depends on what your going for.
I have House of Kolor Tangelo pearl metal flake on my 69.
But I have PPG Calypso Coral on my Dad's 66.
I think the major paint manufacturers are equal in quality. PPG, Dupont, etc.
Are you going to paint your own car or send it to a shop?
Autobodydepot.com has a paint selection chart for factory PPG colors as well as the House of Kolor paint product line.