If you don't mind, I'll add something to this.

If your using Poser6, Carrara is quite good at importing Poser files and working with them. But Vue6 seems to have taken it one step farther in importing Poser6 material shaders and using Posers posing dials for easier posing inside Vue. Just a lettle better than how Carrara does it.

I have and love my Carrara5Pro, but I'm buying the Vue Infinity to go with it. So some extra thoughts to go with what Mark said.