I understand that they use different motor designs, but as I have heard the old XXX's, and liked the output level, and sound quality, I was using it as a comparison. Hoping to hear from someone who has heard both. Since those are getting hard to find, here I am looking for a different sub. By real music, i mean rock, country, rap, etc. Basically I meant it will not be used for spl. Who doesn't need 3000 clean class A/B watts? Thanks.