Anyone use two 2x10s instead of a 4x10? 4x10 = sore back My original plan was a Avatar 2x12 paired with my Avatar 2x10 Delta. If I stick a 2x10 Neo on the bottom, will I notice a BIG difference? I play heavy/fast punk, so I don't need a huge amount of "dub" lows goin' on. I've seen other heavy/punk/metal bands playing with 4x10s before, so am I really gaining that much more trying to buy the 2x12, or should I save my back and wallet and get the second 2x10 NEO?