I've got a friend who has C4D. He found out that Bryce can't export or boolean metaballs, so he set 2 metaball beside each other so they were connected, booleaned it with a cube, so that the metaballs were cut out of it, then converted it to 3DS. Which he sent to me. From what I've seen of it, C4D is the most Bryce-like high-end app there is. It's got metaballs, boolean subtraction, and the most common high-end features. That means NURBS, a good object organizer, full export cababilities, a realistic render engine, and some other things that I don't quite understand, being a Brycer. I've only toyed with it a total of maybe 2 hours, just what I can get away with at my friends before he can steer me away to doing something else.