MTX 9512 or ORION HCCA 12 or DD 9512?

the dd 9512 is a pure monster. i know because i run one. the orion hcca is also a great subwoofer,it is not quite as loud as the dd but it is a very good sub.the mtx 9512 is not in the same league with the other two.mtx tried to copy the dd 9512 and failed miserably.they even copied the model number.lol.