There is no such thing as a "double duty" sub. If a sub can't handle music well, it's a piece of dootie. If it can handle music, big booms for HT is a piece of cake.

Hsu is the way to go. The VTF-2 is excellent. I have one in a fairly big room, and it's performs admirably. They now have the STF-2, which is essentially a VTF-2 permanently tuned to max extension. The STF-2 will save you $50 over the VTF-2.

Go Hsu.

'Nuff said.