That's ethical, but I still rather setups with like 4 18's or 6 15s and put them in max space and throw the power to them. A ton of low VAS woofers bandpassed or clamshelled is not my kinda deal. Cancellation sucks. Although its a time tested fact that its louder on the mic. I still don't like it. I don't know though. I'm in the same boat as the OP with what to do. Although I have about 25 cubes to play with. I want to go for some monster 18s on a shit ton of power. Preferably 4 LMS ultras in a rear loading horn firing behind my head.