I'm running a test render on the new raytracer with the global illumination samples turned up pretty high (800 samples per pixel) to see how many it takes to eliminate grain.  It occurs to me at this point that some of those samples could be better spent on higher quality anti aliasing for not much more cost.  That's my next step.  Here's the result, anyway.  The image to the left took about an hour to render on 3 cores at 1.6 ghz. with all the settings cranked up pretty high.  Image size is 1024x768.