INDIGO is the renderer.
Then, that's the point of unbiased renders. I already rendered scenes for multiple days and I'm not the only one, here
14 hours for a final should be pretty much normal, with a reasonable CPU, a not too high resolution and about 50% direct and 50% indirect light without high-scattering SSS or cauchy_b, I'd say
If you don't like to spend that much time to render something, Indigo definitely isn't the correct renderer for you...
