If you want to see the quality of what Octane is capable of with Poser stuff, just look around at what pple are doing with Reality/Luxrender.

Octane uses the same unbiased rendering algorithms (pathtracing) to render it's scenes as Luxrender.  So whatever Lux is capable of it terms of lighting, Octane can do, but about 10x faster, depending on your graphics card.  It also has other render engine kernels, which are optimized for the GPU.  So if you want very good scenes rendered similar to say Vray, you just use the diffuse kernel, which is like Brute Force Occlusion.  That is very very fast.  Faster than even Vray on my machines, and I only use a mid range Nvidia card.

The octane material tree is deep and totally functional.  Paul will tell you it's about as good or better in some ways to the Poser materials.  Plus you can get real caustics, and SSS.

I'll be posting some Octane/Poser renders soon to my gallery.  I just cleaned house, and I don't have any of my older images up right now, because Octane changed the way I work so much, even my old Vray renders look like crap to me these days. ;)

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Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

System: Pentium QuadCore i7, under Win 8, GeForce GTX 780 / 2GB GPU.