I've used Bryce for a while, now trasferred to Vue. As far as render time goes, I think Vue is little faster then Bryce. But, I didn't really compared it in that perspective. As far as ease of use goes, Vue is way better then Bryce. Even in options wise. I've been using Vue Demo for quite a while, posted some images also. Recently baught the full version and I have to say I'm happy with it so far. However, Vue has a little stability problem.