I'm about as "dinosaur" as they come on using new stuff. I shoot the bc/cc stuff now, and would never go back to single stage!!!

As far as DuPont, I believe I would go with their bc/cc system. I've shot a bit of Concept, tough as nails but I prefer the two stage paints.... I'm certainly no pro painter by any stretch of the imagination, just letting you know what works for me..