I am ready to upgrade. Do you think I should purchase Poser 4 w/ ProPack or Version 5. I am reading a lot of issues with Poser 5. I have also read it is not compliant with other 3D applications. I am a graphic and web designer. I want to do realistic work. I am also debating between Bryce 5 and Vue D'Esprit. Any input would be welcome.