I always get excited when I see new YouTube videos about installation practices. If you're interested in going the route of wall clips, here's a new video about using Green Glue clips before installing new drywall. (They recommend, of course, adding a second layer of drywall with Green Glue afterwards). You'll forfeit an additional 1.5 inches of room depth on each side if you use this method. It would be helpful if they supplied before and after specs for room acoustics!
information and simple solutions for people with neighbor noise.