Pros : Metaballs, more render features, more sky options, and OF COURSE, the Tree Lab! Cons : STILL doesn't support morphing, and STILL won't let you export other than terrains. I could be wrong, but those two things alone make me hesitant. I can break off pretty good trees anyway, and I've already got Amorphium (Biospheres). I say go for it, Bryce is cheap compared to the so-called Big Dawgs. But don't expect it to change the world!