In reply to:

My only compaint with that sub is it doesn't keep control down low as well as the SVS and better HSU's do.



That's interesting. NeverHappy...you have an Ultra...right? Your control comment is partly how I felt about my VTF-3 when I compared it to 20-39PC+, and to a lesser degree, the PB1+. The VTF-3 seemed to have better control and articulation throughout. In fact, I thought the STF-2 had better control as well...just not the output or the ability to play lower hz.