Ok, my response is unsolicited, but I'd like to hop in and provide an answer to that question, since I'm passionate about it.
The (lighter) green/yellow figs I've tasted tend to be more sweet than anything else, with very little richness (to me, richness = that figgy taste you get from a Fig Newton). A lot of them seem to get really darn big, and watery, too. I have yet to eat a green/yellow fig with dark red interior, so maybe that would change my mind? Not sure, but I'm growing a few.
The (darker) black/purple/dk brown figs I've had have more of a tendency to have richer taste, less watery, more character to the flavor. I've heard some people say they've tasted flavors in smaller dark figs like "vanilla custard" and "mixed dark berries", which is exciting to me. I haven't tasted anything in the "vanilla custard" arena yet (I have cuttings of one, though), but I've tasted ones that definitely had berry flavor (albeit a bit astringent in a young sample), and I've had more than my share that had richness of 4-5+ on a scale of 1-10, whereas the light figs are more like 0-1.
So, for me, bang vs. buck, I want a very rich fig that's not watery and only moderately sweet. I'd personally rather have a small dark fig with dark interior - it has been my experience that the bigger they get, the more "diluted" the flavor seems to be. I'd rather have all that big flavor jammed into a small bite-size package.