Well to me obviously it worked for them. If the product reduced their noise levels and did what they wanted it too then it was worthwhile. Did any of these individuals test their rooms SPL levels before and after the install? Also did the other idea that i gave give me the same type of sound isolation?

7.1 theater room
60 fronts vp180 center 4 qs8's ep500 sub

3.0 tv room
m3's vp150 center