KlipschArtist here -
I have an SVS-PB12 Ultra with the Rosewood finish. It's in a 16 x 12 room, and the lows are sounds I've never heard before, and it really makes surround sound awesome. The SVS customer service and order process is top notch. From initial order to my door, in 5 days. For music, it has a very clean sound, as long as you don't crank it way up. I haven't listened to any of the HSU subs, but I would go with SVS again, maybe just adding another Ultra.[]