I'm not too far from both the Carvin store in Poway and the factory in Escondido, so I took some time a couple weeks ago to try out the V3M. Man, what a nice amp. Lots of subtlety on the clean channel - from blistering high-end sparkle to low-end crunchy blues and it only took about 15 minutes of fooling around to get the sounds dialed in.
The gain channels are voiced more like a Mesa than like a Marshall, but with the mid boost off and the mids dialed up you can get some great brown sounds out of it. Needless to say that there's more gain on tap than anybody could rightly use, and getting a really great metal-ish sound was simple. Again, about 15 minutes of fooling with the tone controls and the EQX switch and I was able to get everything from Metallica to AC/DC.
The big selling points for me are the wattage cut switch (50-22-7) and the cabinet-voiced line out. That with the flexibility of the amp has me sold. So, I know what I'm asking Santa for this Christmas.