I am thinking that I am deciding between two SVS 16-46 PC+, two HSU VTF3HO with turbo, or one EP-600 for subs that seem to be in my price range and capability.

SVS: I don't know if the high end bass will be greater than what I already have. Output below 25 Hz will be ridiculous compared to what I have now but I don't know about the 60 to 80 Hz area.

HSU: Who know when it will be out. Who knows how it will perform.

EP600: I'm back to having trouble believing this sub can output more and better than 4 SVS Ultra drivers. Actually, I don't have a problem with the "Better." It's the "more" that I have trouble understanding.

There's no place like 127.0.0.1