I love Torus. I have a 4.5kva single high power transformer that I distribute power to the room via a SqD NQ panelboard. I also have a RM20. I have heard all sorts of filters and Torus is the only one I like on amplifiers. I have not heard the latest Shunyata. But Shunyata is priced at $10,000 to $15,000. A Torus RM20 is $4200. You could buy one for the amps and one for the front end for the price of a single Shunyata. You can get a single high power core of 12kva, thats 100 amps, and easily power any system out there.