Unfortunately the VUE 2 Demo lacks VUE's strongest feature: plants. It only comes with the dead tree. SO you kind of have to guess at what actual VUE would be like. Judging from the pictures I see posted here VUE renders to me look much better at both indoor and out. That's just my opinion. Though I have noticed some problems with 'staring at the sun' pictures. Currently I don't own either app. Having just spent a good deal of money on a PC upgrade it will be a little while before I buy in as well. I would suggest looking through art galleries and letting that tell you if VUE has something in it you haven't been able to do with Bryce.

Truth has no value without backing by unfounded belief.
Renderosity Gallery