Guys-
I have no experience w/ the RM25. I do have listening experience w/ the Pulsar + Perspective. These (2) models are all about the midrange.
Probably the best vocals that I have heard in any speaker. There is a down side, as to my ears, the top octave is rolled off and at least the bottom octave as well. This was present on both vinyl & digital recordings. Not bad in any way. I believe that Jeff Joseph offers a true full-range (no roll off) on the Pearl 2 + Pearl 3 loudspeakers!