I don't have experience with either of these products, I use a Shunysta Hydra. However my best solution came after a hear that required all new feed from the city, and a new panel. I had an electrician run the first two breakers from the panel, with 10 gage solid core <20 feet to my outlets, and sink a copper grounding rod, into a dirt and rock salt pool, about 8 feet between the outlets and the ground rod and use this grounding rod only for these outlets. I use isolated ground outlets to ensure nothing comes back though the metal boxes and conduit. This solved all the problems of inconsistent power, dirty power and the frustration of never knowing what my system would sound like at different times of day. I of course live in an old house with easy access. And yes I've had electrical engineers tell me online that this is not safe, creates a different in grounding potential, etc. however my licensed electrician was happy to do it, and my set up passed inspection for code in the city of Chicago, which is know to be a bear to deal with.