The midrange on the VMPS 626 is not a ribbon but a planar. It sounds very good to my ears: fast, transparent, detailed.
The RM30's sound is quite reminiscent of the 626s, with lots of delicacy, transparency, speed, and naturalness. The sweet spot is a bit small, but even outside the sweet spot the speakers sound good. Inside the spot, these speakers are very hard to beat in the price range; I have not yet heard anything comparably priced that I would rate as its equal.
The RM30's sound is quite reminiscent of the 626s, with lots of delicacy, transparency, speed, and naturalness. The sweet spot is a bit small, but even outside the sweet spot the speakers sound good. Inside the spot, these speakers are very hard to beat in the price range; I have not yet heard anything comparably priced that I would rate as its equal.