Hi Charles,
Can't comment with any authority on the V30, but compared to the MC90, sure. The MC is "warmer" with a more pronounced mids to upper mids than the EVM. The EVM sounds more "flat" (or maybe "linear" is a better descriptor) than the MC across the mids to highs. BUT, the EMVs highs (that elusive "presence" tone) is clearer and, here it comes, "brighter."
So there's the confusion. It's symantics. "Brighter" in the very upper freq's is what the EVM does better: clearer, more tonal definition, and "can" be harsh if eq'd too aggressively. Yet "can" be very smooth and "glassy" if you watch those treb and pres knobs.
By contrast, the MCs more aggressive mid and upper mids, where most of a guitar's voice resides, makes the MC90 appear "warmer" and a bit "darker" up top ...keeping in mind that "dark" is only relative to the EVM as the MC is by no means a "dark" speaker, as I am sure you know.
Now as for bottom, this is easy: the EVM is tight, focused, and very clean/defined. Almost defies logic given it's excellent upper-freq response, but the bottom is, IMHO, that good! The MCs bottom is less defined, "softer" and more subtle if you will. Not "bad" by any means, as I feel it's a great guitar speaker, but you just will not get the tight "chug" from an MC that comes so easily/naturally with an EVM. That said, I do not play metal and don't really want "chugga chug," but the EVM is glorious with clean and slight breakup, especially when the guitar is out there on its own, sans bassist, for certain passages (or gigs). And with saturated OD, the EVM also delivers across the guitar's freq range very well ...where the the MCs tends to have less bottom and more mids/uppermids and, thus, can "cut through" a full band mix very nicely w/o sounding brash.
IMHO, both are amazing together. If I were forced to choose to play only one, I'd choose the MC over the EVM. But together, whoa!! It's a gestalt thing: together, the two speakers' voices are *much* more than the sum of their parts. Again, all IMHO.
Edward