What's the dimensions of your room? If you're playing in a relatively small room, it'll buzz, no matter what. I always tune my toms a little higher than normal, so that gives it more snare buzz, but if you downtuned your toms a bit lower than usual (just a tad) it really does help against buzz. You could stick a playing card in between your snares, although that would give it all crack and no ring, which from what I read wouldn't be perfect for you, and it's not perfect for me either... but it's worth a shot.
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