I think you'll get a lot of different views on this question, really it comes down to what sort of images you want to make.
If you want to do images with peeps in then certainly Poser or DS will do what you want. If you want to create nice scenic views then Vue would be good for that. A lot of us use both Poser and Vue or some use DS and Bryce etc.
IMO there's no easy answer, it's horses for courses really!!

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Cofiwch Dryweryn.