Let me state that this is not a comparison of the two packages. This is a comparison of one function that is the CORE functionality of the two packages. In my eyes so far Terragen wins the environmet creation functionality hands down between the two. The Cloud, environment, and water generation is far superior. It is this aspect that I compare. I was expecting similar improvements for Bryce 5. SOme real changes in the way it handles fractal generation and the quality built in. You can get bryce to generate as good a terrain and sky as terragen. But the work required to get there is high. But when you have the chance to start off with a fractal and sky generated terrain such as the one provided by terragen much work is saved. Terragen is not a modeler there is much more functionality in Bryce. But I like so many other people were waiting for such improvements in Bryce 5, It still may be a great new release but so far I do not see much there that can not already be done in B4. We will just have to wait and see.