Terry, My understanding is that a double layer of 5/8" drywall with Green Glue in between does not vibrate at all. That's not to say that Quietrock is not better, probably is, but I do have a budget. As I have said I will be looking into both. BTW the room didn't sound bad with the old sheet rock. Thanks for the input. I'll let you know how it goes.
Regards, barts
Regards, barts