francois, jeff and mike,
beautiful work. as part of my search for a rendering engine that I could learn in a reasonable stretch of time I downloaded cheetah 3D but have not started working with it. my hunch is that it is probably one of the best bets around. (I keep waiting anxiously for kerkythea to be ported to mac)
on the other hand, I have been playing with Artlantis R/Studio (rendering and animation app) and the first tries have been encouraging: easy to learn, intuitive, real time application of materials to surfaces, etc. however, it is not as cheap as cheetah (even though I got a faculty one year free license).
but I shall get to cheetah eventually.
regards.
edson