I have used Bryce 4 for sometime and tried the Vue3 demo. I think Bryce is a little better in rendering water and much better in rendering glass etc. because it fakes caustics. Not even 3dsmax producees caustics without expensive plugin, nor does carrara. ( I read that the new free strata studio version does caustics !!!!) So my conclusion: If you want to render landscape scenes, Vue 3 is better. If you want to render outher stuff as well, i.e.: still life objekts on a table etc..., Bryce 4 is better. P.S. You can find a render comparison between Bryce and Vue 2 on http://www.gdiekert.de/