The RTOM Black Hole muting system is a very convenient way of making your acoustic drums much quieter (80% apparently). I have one on a 14" snare for teaching and use it together with Remo Silentstrokes on the toms, which I bought beforehand. They both have the same bouncy mesh feel and both are tunable. The advantage of the RTOM is quickly popping it on and off your drum as needed: they do not require changing the head. I can envision using Black Holes across my entire kit in future, but not until the price drops. I understand paying for innovation, manufacturing, distribution, etc. But the materials used are not gold.