I currently have a pair of SQ XBL^2 10s in 2.4 ft^3 tuned to 32hz. They're being fed right around 500w a piece. They sound great and have decent output but I find myself wanting a bit more. I have experience with mostly SQ subs (IDQ, AA Avalanche, TC2, etc)... how would the SA-10s compare? They'd be used in the same box, with the same power.