As you already own Vue, I think it is not useful to get Carrara for importing Poser content, I find that Vue handle them better, and render them at least as good as Carrara. One of the disadvantage of Carrara could be that it doesn't import dynamic hair and clothes, and you need a plugin to import Poser content (except in "Pro" version). The advantage are the modeling function that aren't in Vue, but if you want to get a modeler, for the same price you can get Softimage, and it is a quite good software;) (euphemism)