i've been interested in other renderers since i noticed that you can't show skin at all realistically without GI, because skin colors itself and makes inner areas more red.  and just in general kind of hitting a limit with lots of faking effects.  i've been looking at Kerkythea specifically for a while, though i haven't tried it at all (too much to do with just Poser and even a bit of Blender).  i could have sworn i had no problem with Yafray and displacement, but i could be wrong.  

one thing that led me to Kerkythea was the flexibility to do unbiased renders.  i've never, ever seen anything like the renders posted in the Indigo renderer's gallery, so i'm definitely interested.  that said, Kerkythea can do regular biased renders (GI, AO, etc.) and with Echo seems to have enough of an interface to make coming from Poser easier.  i'd be very interested in an exporter, especially if it automatically scaled Poser figures up from the tiny size they are originally.  i know i have to scale up by 10 to get a decent size in Blender, and since i've also seen how inaccurate eyes are in Poser due to their scale, i'm guessing it would matter in Kerkythea as well.

is everybody using the "Classic Ray Tracing" renderer?  or are you trying any of the other options?  i know MLT in Indigo looks amazing, but i also know it can take a very long time.  that said, since MLT renders refine over time instead of render more of the image, and since most of my time is taken up in test renders, i'm still interested in trying it some day.

Quote - Supported Rendering Techniques
    - Classic Ray Tracing
    - Path Tracing (Kajiya)
    - Bidirectional Path Tracing (Veach & Guibas)
    - Metropolis Light Transport (Kelemen, Kalos et al.) on top of Path & Bidirectional Path Tracing
    - Photon Mapping (Jensen) (mesh maps, photon maps, final gathering, irradiance caching, caustics)
    - Diffuse Interreflection (Ward)