My intention is NOT to purchase a sub, just don't have the funds and I don't spend enough time listening in that room to justify it. Also, my office space is a loft that empties into my living room, with a half wall dividing it, so its quite a large space, so I suppose bass response without a sub may be moot regardless of what I go with. When time permits I'll have a look around the metro up here see if I can't find a retailer with the Behringers.
Edit: Just to clarify, I do not have a sub I'm using for this system. My SVS is in the living room.