You dont have to uninstall Vue 4 or Mover 4 , but you have to install Mover 4 for Vue Pro as well - with your Mover 4 serial number. Be aware, that dynamic Poser effects (hair and clothes) are not supported at the moment. Something a lot of people do oversee these days. "Worth the money"? Well, depends. I think it is, others say not. All a question what you want to do with it and what you expect. For me it is a big progress, compared to Vue 4. Plant editor, automatic update of modified imported objects (Poser scenes for example) to name only a few new things. But like buying a car, what does it mean "worth the money"? Very different things.

One day your ship comes in - but you're at the airport.