Tone matters at high volume, any volume of rally. Everyone wants to be Bongripper (can't blame them, they're fucking awesome), but not everyone has thier big, loud rigs dialed in as well. You can't just go out and buy all the big cabs and old Peaveys and expect great tone. You need to tailor it still. That's the problem, volume is not a replacement for tone, no matter how many 4x12s, 8x10s and 2x15s you have on stage.