@nobrot,

if time *and *budget weren't a consideration and you wanted to go "bleeding edge", PRman:

(1) Proven industrial strength, nearly non-crashable command line render engine responsible for several movies over the past 20 years.

(2) Poser outputs RIB, which is PRman's native file format.

(3) rendertime geometry swapping (low-res for previews / high res for renders) is quite possible the coolest thing ever

But....

(4)is exceptionally fast (especially motion blur / depth of field) but only with careful and thorough pre-production.

(5) the learning curve is daunting, but well worth it IMHO.

(6) shading / texturing requires a separate program or the ability to code / compile shaders and textures.

$0.02