One big drawback in Carrara is that the atmospheres are crap. The cloud editor is really bad and makes skies look like they did in Bryce ten years ago. The most impressive renders of Carrara landscapes that you see will have just a clear blue sky. On the other hand, I think it is easier to set up a good indoor scene in Carrara than it is in Vue. 

I've used Vue much more often than Carrara. The superior character animation features in Carrara made it seem like a good way to learn animation, but I put off that notion once I learned that Daz had botched the ERC implementation and preferred to pretend there was no problem. If I need indoor scenes, I can build and render them in Modo 401 64-bit, (a program that makes Carrara's modeller look like a peice of junk by comparison, by the way.)

Download my free stuff here: http://www.renderosity.com/homepage.php?page=2&userid=323368