is the orion hcca worth it. im almost finsihed with a fresh build when all of a sudden the subwoofer ive always wanted appears on craigslist for decent price. there very rare in my area. in peoples general opinion would it be worth to pick up a hcca 15.2 and put the soundowns in storage for awhile? ive heard wonderful things about this sub but also heard some negative (coils get hot so cant play to long) all in all are they a good buy if your not paying retail?