The best decision is one to be made by the purchaser after comparing both speakers.
I personally own VMPS RM40s and enjoy listening to them very much (although I did have some initial QC issues). If choosing between the RM30s and HT3s I might go with the HT3 for the deeper bass. However, I do enjoy the detail and imaging of the ribbon midranges.
Best of luck,
John
P.S. Why are you only comparing two speakers? There are several speakers at this price point that should be compared.