I usually use four 8 ohm 2x12 cabs with an Aguilar DB750 head (975 watts into 2 ohms) but just picked up two 8 ohm 4x10 cabs so now need to decide which cab to stack on top: the 4x10 or 2x12??? Cabs are Music Man Audiophile HD410, 8 ohm, 700 watt, large front bottom square ports and Music Man Audiophile HD212, 8 ohm, 600 watt, behind the grill round ports. All cabs have a 6" mid/hi driver (phase plug style). 4x10 cabs have B&C neodymium drivers and sound full range while 2x12 cabs have regular B&C ceramic drivers and sound slightly mid range heavy with the Aguilar DB750 set flat. All cabs stack great either way being the same width and depth with the 4x10 being about 6 inches taller than the 2x12. What do you think.... 4x10 cab on top or bottom of stacks?