ILM
I didn't go to the Modelview sessions but the teacher (Linda Scott)
stayed at my house for a couple of days. In our informal discussions
we found that each package has features that the other doesn't, but
nothing big came up. I'm not sure if Modelview does ray-tracing,
which would be the only biggie I can think of.
Linda's pictures were great, but she is from an art background.
Again, I suppose it's one of those things where it's a great tool in
the hands of an artist, but not necessarily for an engineer.