I'd personally be down for both. An amateur one might be fun for the new faces imho (assuming it was still shot by the same Euro crew & rig you typically use), and especially since you'd go into the scene without any idea of what to expect from each of the girls.
I'm sure there are a hundred better examples, but first thing that comes to mind for me is the old Dancing Bear series: basically a big party with dozens of amateur girls and the guys would just shift from girl to girl every few minutes. Of course in VR it would have to be reversed to avoid all the camera movement, so maybe something more like a "VRB World Cup", but I digress...
Anyways I feel like Porn Stars would of course be fantastic, but amateurs could be a nice change-up since Euro scenes in general tend to feature that same rotating catalogue of 30 or so girls that get shot over and over by every one of the Euro studios. As much as I genuinely love Alexis Crystal or Veronica Leal or Lola Myluv...they are in just so, so many scenes as it is.