I have both Bryce 4 and Vue 3, too, and I use them both. Vue does seem to render more quickly, and I agree that when it comes to changing materials, I think it's alot easier to do with Vue. Moving and selecting objects is easier too, because they're all listed in the World Browser, and you have the four views to work with. I use Bryce for some things and Vue for others. I think Vue's ability for generating realistic landscapes and vegetation is somewhat better than Bryce's. If you have to get just one, get Vue, but I think everyone should have both. Cheers, Mike