Subwoofer advice sought

why stop with DBA?  Might as well just go ahead with full-on 3D immersive surround sound and go for the full monty of sound envelopment, right?  Afterall, if you aren't setting a reference at producing a live acoustic music sound stage then just immerse yourself for the experience.  We all like music presented in various way and there's no wrong answer....but being immersed in the music in an unnatural way isn't for me.  All venues have their unique acoustics and associated challenges...I don't often see 4-6 double bass players scattered throughout the venue to immerse you in their bass.

I tend to agree with @erik_squires on this one (but I wouldn't call it a cult - we all have a preference for how we enjoy experiencing sound and music).  Are we trying to envelope ourselves within a soundstage instead of having it presented front of us?  I actually thought the biggest merits of a DBA approach was not necessarily to envelope yourself in the sound (like you may want in a movie) but rather to combat problematic room nodes....so it's really a form of acoustic treatment and not creating a fake soundstage that envelopes you in it. 

@big_greg  I have not heard a DBA system and I was really commenting on the first response to the post stating:

Low bass improves the sense of envelopement, feeling like you are in the soundstage instead of it being just in front of you.

I think DBA is probably a good way to combat room nodes and help distribute bass evenly.  Good to hear it doesn't envelope you and place you inside the sound stage which would be an unnatural presentation in my view. I would like to check it out sometime, although it would been completely impractical to integrate into my mainly listening space which isn't dedicated to listening - it's my living room.  Life's a balancing act of priorities ;-)

@big_greg  You're exactly right...the bass is traveling throughout the venue even if it's originating from one side of the stage.  This is the effect of the venue or the room.  What you are experiencing is the room effect on bass.  They aren't creating it at the concert by putting bass signals in an array throughout.  You have a room as well that you listen to music within.  Look, I totally understand why a DBA would work and help counter the effects of uneven bass distribution in your room.  My point is that this technique is dealing with room acoustics and the whole point isn't to place the listener inside or "enveloped" within the soundstage. But like everything else, just pick what you enjoy listening to most and the way you enjoy it implemented most.  There is no wrong way.