As a VMPS dealer I think you can guess where my reccomendation might lie.
But I have heard "both" speakers and they both are incredible and each have their own sonic personalities.
I really like the VS and would also say that in a well treated room you could very easily live with both speakers.
I would suggest that the VS would have more "dispersion" which would give you a larger sweet spot, with degraded imaging (notice I didn't say bad imaging)
The RM30 with its more limited dispersion would have a slightly smaller sweet seat, but "razor sharp" image and stage.
Both will play quite loudly without strain. Both are quite atractive depending on your aesthetic sense.
Both have similar bass capability and will be subject to placement and set up.
The RM30 has "adjustabilty" to the midrange and HF drivers making it more adaptable to "specific" preferences and requirements.
Again, I quite like the VR-Jr and in a recent listening session, felt that it offered one of the most pleasing of listening experiences (with the associated equip).
I beleive the RM30 is less expensive, even with most of the option/upgrades (when purchased through a dealer)
So, again I would say that neither would make you unhappy, but if price and imaging are at the top of your list, the RM30 might have the edge.