Hi Dan, I'm glad that you like MoI's UI focus!

re: easy to use renderers - yes they do not seem to be as common as you might think, it tends to be more common for rendering to be part of some big package that does a zillion other things as well.

Some good suggestions above, and there was another renderers discussion not too long ago in this other thread:
http://moi3d.com/forum/index.php?webtag=MOI&msg=3136.1

- Michael