I encountered this problem when I was setting up a home theater room in my house. If you approach it correctly, you can combine both solutions. I requested a consultation through
Sound Pro Solutions, and they advised me on how to choose the right acoustics for a specific room and what materials to use for soundproofing. The result is that the sound inside the room is fantastic—clear and rich, and almost inaudible outside the walls. The main thing is not to try to do everything yourself at random, but to trust the experts, then the result will really live up to your expectations.