What I meant is that you're not running through a high quality recording rig, and thus the speakers will play less of a role in the overall sound
I mainly meant recorded... If you took those clips and loaded them up with a band behind it, the V30's would sound cleaner, clearer, more defined, and more upfront. If that's bad tone to you... then so be it.
I don't purchase amps or speakers based on who uses them, either, but I do take advice from those with extensive experience in the area at hand. The three guys I mentioned are 3 of the biggest producers in extreme metal.
That probably did play a big factor in my rather (limited) experience. I still find, however, that even in my Rivera cab that the V30's sound better than the Eminence copies of them. BTW and OT, but since you've had experience, how do the Rivera cabs stand up against Marshall, VHT, Etc... cabinets, soundwise?
Again, I could always hear myself, but I find that V30's always sound cleaner and clearer. But you also have to consider that I'm using a much more extreme amd modern tone than you are, in a much more extreme metal setting

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The voicing of the cabinets also has a lot to do with it, yes.
I'll admit, Eminences sound amazing in the room, but I find that when you run them through a 57 or i5 and to desk, the V30's just mic up the best.