My vote: The second one marked KM-84 sounds bigger, livelier, more musically exciting - not a lot, just enough to notice. The KM-84 has more percussive presence, i.e., it has more punch and sizzle, e.g., picks striking strings are more crisp and articulate and percussive. I like the overall tonal balance - the mandolin sounds right and the banjo is sufficiently far back to avoid the usual harsh percussive whack banjos have up close. If you were producing my record, I would have you use the KM-84. While both are VERY close in overall sound, the KM-84 JUST slightly more energetic. And that is just MY take ... James
