If you decide to go with the EP400, I can say that it is an amazing little sub, great for music. I had a chance to try one out in my house and at Mojo's, that little sub can put out some great, tight, clean, bass, just like the other dsp subs, just it lacks the size to effectively be used for serious HT, I wish it wasn't priced as high as it is or I would have at least one by now.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70