Lots of big cabs give a kind of OOOOOMPH which small clever cabs with super efficient speakers cannot. The most exciting notes I played were through an EV1516 paired with a Warwick 6x10. All sorts of multiple speaker mismatching going on. It was just a solid wall of warmth. Not the volume, just that much air moving. 2 x 2x15 cabs in tandem would be lovely.