depth map is ok for backlit shadows ( to prevent illuminated nostrils and lips ) but if you want good quality shadows -> raytraced
actually. get P8 and use IDL :) u dont need IBL or AO applied to anything with it.
this is IDL.
1 EnvSphere (bagginsbill google page) with a free studio HDRI from DA.
1 Infinite light with raytraced shadows -> 3 blur radius and 0.25 bias, and 19 samples.
default LRP skin