From what I've seen World builder is a fine program with a 3DMax type interface and a lot of advanced features for creating large scale landscapes and doing lots of animation. My only problems with the program are that the rendering engine is not the smae quality of Vue, Bryce, or even WCS, and it's not known to be an "artist's program". Still, I was very tempted to get it till Vue 3 came out. ($400? last time I looked it was $700)

I'd rather stay in my lane than lay in my stain!