Agreed. I know that the Alias|Wavefront Industrial Design tools based on Maya & Mental Ray make some pretty impressive looking images. However they better concerning how much they cost .
One thing that I'm wondering, and if those playing with Maxwell can chime in here, is if there was a way to go straight from Revit->Maxwell if that could get around some of the model size issues when rendering. What I'm talking about is the fact that Revit can handle it's own models pretty well, but when you export those models to DXF they become monsters with *way* too many faces and data for other 3D programs like VIZ/MAX (or at least that you would typically use within those programs, and Radisoity and Mental Ray both have limits on how big of a model you can really produce efficiently via Global Illumination). I know with at least with Radiance that model size isn't as big of an issue, and you can have pretty much almost any size/complexity of model that you want and still get an image out of it efficiently. Seeing that Maxwell is also a physical-based rendering engine, can it take any size model you give it? I mean, does it only count the area you're rendering, or do you have to crop down the area thought about like you do with Radiosity?