Vue renders better than Carrara for most images, but Carrara renders some things nicer.

However Poser import -usually- fails for Carrara on the 'native import' (I don't have the plugin...). Invariably on every import a pose is partially lost, or a prop fails to come in, or a figure fails to come in but its skeleton imports, or some mix of these issues...

I've never had a failure on import into Vue.

Bryce is not bad, and is the cheapest choice - $19.95 for Bryce 5.5 at present. But it's nowhere near the others in what it can do.

My gallery has renders in all three apps - so that is a chance to see the same artist with the same vision and skills in all three apps - so that the difference, where there is one, is the fault of the app.

Truth has no value without backing by unfounded belief.
Renderosity Gallery