Why don't you get the demos for both and see which you prefer? I prefer Bryce because that's what I started with and I'm lazy. If you look around you will find wonderful work done with both programs. I have to say that in some ways Vue's 4 way windows can be a distinct advantage, as is the presence of foliage. Bryce seems to have a "harder" look to its renders as opposed to the "softer" feel from Vue (sorry, don't know how else to describe it). This seems more suitable for my style but if I were more interested in a "natural" look I might prefer Vue. People claim that Vue's renders are substabtially faster then Bryce's. I don't think you will go terribly wrong with either. Pick the one that best suits your style and way of working.