As an owner of RM40s, I have to hand it to VMPS not only for the melodious/crystal clear midrange, but also the tight and fast bass. You can adapt the bass response by adjusting the mass (/putty) of the Passive Radiator in the speaker. I remember my RM40s was almost flat to 25Hz in my room, and I never felt the need to use subwoofer for 2 Ch.
A new line RMx will be introduced in CES. You can read more about it in vmps forum in harmonic discord (.com)
BTW for all you folks on the fence, Brian has come out with a new tweeter upgrade which will improve vertical dispersion and you can retro fit this to the older models.
Till date, I have never come across a speaker which you can fine tune for treble/mids/bass and get desired sound for much lesser $$.
Cheers,
Kishore