Whats the trend ?
I guess some would have you putting subwoofers in every corner, under the couch, in the walls, behind the toilet, and out in the garage. Some like that boom boom you hear in the cars rockin' down your street at 2 am. But, if real bass is your game, if musical bass is your thing, one sub of good quality should suffice. Rel is a favorite among music listeners, and for budget minded folks, HSU has some decent offerings.