Thanks for the quick info to all. I should have added that I know almost nothing about subs. My reading of the Hsu STF vs VTF is that it's the variability that maked the VTF well suited for music use. (But I certainly may have mis-interpretd that.)

The edesign seems decent. As does the Lava that was recommednded on the Home Theater Forum. I'll have to do some Googling on these tonight. Thanks again.