Depth of field, soft shadows, true Radiance, Gamma correction as part of the render, Motion blur during animation choosing the number of rays per pixel and a whole host of other new features will make this a worthwhile upgrade in my opinion. as a Lightwave 6.5 and Bryce owner i must admit that i will enjoy seeing the sarcastic smirks wiped off the faces of many of my Snobbish bretheren who dismiss bryce as a "toy" Mocap