I can talk a little about this as I use both Vue (at home) and World Construction Set (at work). They really have two different purposes, so for n-light to answer his/her question he'll have to think about what he needs. I'm a GIS person and I use World Construction Set for visualizations of potential outcomes of forest management. It's renderer is not near as nice as Vue's. It does however populate and render large areas with 2D images of trees or whatever you want very quickly. Integration with GIS is not near as good in WCS - nor is it intended to be -(although you can pull in DEMS and other GIS layers in WCS to develop your image) as it is in the company's other product which was built to be fully integrated with GIS - Visual Nature Studio - which is very costly (between $1500 - $2000/seat I think). You can animate in all three programs. You can use 3d images generated in other programs (trees, etc.) for foreground detail in both WCS and VNS. WCS v6 doesn't come with any 3d trees or vegetation - I'm not sure about VNS. For images leaning more towards art, I personally would choose Vue. For images where I need exact, real world placement of items on the terrain I would use WCS or VNS. It will be interesting to see just how much capability Vue 5 Infinite has in this regard.