The B315D has performed so high above my expectations that I would not hesitate to recommend it to anyone who is serious about audio. A couple days after I got it, I DJ'd for about 400 people in a large venue with only two of these babies and they performed perfectly, although I did get a little bit of clipping when I pushed it up to 70% running max hot off my mixer. The highs are so, SO clear and the bass is sufficient for lighter EDM (I wouldn't expect to drive serious dubstep out of these things, house and moombah are great, though).
Several people compare this to the Mackie Thump 15" active box, which I also own, but honestly the Behringer kicks that one out of the park. The Thump provides maybe 65% of the volume of sound that this thing does when pushed to clipping levels.
A note, however, that mine does have a little hum/buzz/noise, but that might just be my cable, and it's not noticeable once you get past about 20% volume. Also, the thing is pretty big for an active unit, don't underestimate the size. Not something you can just run around with on your back/in your hand. I can probably carry this thing for around 300m before I HAVE to set it down.
All-in-all, great product. I'll be buying from Behringer in the future.