Who makes good paint?

My car was painted a long time ago, it was done in a one stage. I have it at the Detailers right now, they just finished the wet sand and the buff. They said the one stage is a lot better from their point of view, they were able to get all the body work scratches / imperfections out. These are the ones that appear over time, they do not show up for years. They were able to get everything out, they said with base coat clear coat, that is not possible. Just presenting a alternate opinion.

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Not going to work on metallic paint. Straight color is fine in single stage. metallics.. once and done it the motto there , that is one of the reason for BC/CC .