We use Moi3D for our daily business work.

Export Moi3D files as *.obj and import with Blender -> Works very well !
... many Blender import options available.

Also the usage of Luxrender in relation with Blender has a lot of important features:
Network rendering is our favorite:
[...]
LuxRender features support for cooperative cross-platform network rendering.
Whether it is on a local network or over the internet, multiple computers can render together,
both on animations and on single images. There is no limit on the number of computers that can work together.
[...]