I am not sure that Dr. Hsu helped to design the M8; where did you get that information? I know he helped with the original LFM. If you need a small subwoofer for less than $450, I would go with the speedwoofer. If the application is for music, I would consider the SVS SB1000. I think the VTF1 would be the highest performer, but if you don't have room for it, that is that.