Like a lot of things - this is purely subjective. But I'll share my rationale for getting the Copper Red Metallic. After looking at all the colors available (my dealer actually had every color on the lot); the blue was not my style, the white - although BEAUTIFUL - would be way-too-much maintenance to keep clean... but I did love the pearl in it. The Black seemed interesting until when i walked around it, I noticed a brownish, rootbeer-metallic tone to it which kinda tuned me off... besides... although opposite of white, Black also shows a LOT of imperfections and dirt.
Ultimately... the "red" did a good job of "playing with the light" and showing some depth. Truthfully, I would have LOVED to have seen a sort-of champagne-metallic or something more "classy"... but it is supposed to be sporty, not classy.
Under my sig-pic below, is a link to more photos of my car in direct sunlight. The color has grown on me.