This is spot on.
Stroodes, this good, fairly recent introduction entitled 'How to make publication quality images with PyMOL
' stands in stark contrast to the idea expressed in this quote from your post: "While this is very practical, I suspect that the exported images aren't that refined."
More support for PyMOL being popular for publication:
"A large percentage of the figures in journal publications reporting new macromolecular structures are created using PyMOL." - SOURCE: https://proteopedia.org/wiki/index.php/PyMOL
Stroodes, you should explore the ray command, see here for the 'Publication Quality Images' entry at the PyMOL wiki.