I have just another opinion about landscaping with carrara or vue.
For me, carrara is the most better choice. Extrem high quality terrains, which reach to terragen, no, they may be a bit better then terragen, and so far better than the Vue concept.
Proof it, by visiting my galerie here and compare it with typical Vue landscapes. Of course, I do not use much vegetation, this is a plus for vue, but the terrains and the possibility to use terrain tools like Worldmachine, Terraformer, Leveller, without loosing the high resolution of this tools, is an aboslute clear advantage to carrara.

I am really wondering, about the less landscapes here in the carrara gallery, but I am sure, this will change