Attached Link: Is it Carrara or Raydream what I need ?

I am new to 3D designing and therefore I would like to ask you, the experts, what is best to do. I bought Poser 4 and Bryce 4 a week ago (what a timing with all these take-overs), if I want to make models/props myself should I either take Raydream or Carrara ? I am especially interested in which program has the best import/export-utilities for Bryce and Poser.