Do I even need a PLC?

[Mike82]

While I was living in the city showing significant mains noise as measured on either a Entech meter or a Trifield meter, I used a variety of PLCs- AudioMagic, Running Springs Audio, Silver Circle Audio, to name a few. For the most part they offered some improvement to the sound of my system.

Now, I'm in a newer built home in a suburban area. I have the Environmental Potentials EP-2050 in my panel and a dedicated outlet for my system using Shunyata Z1 duplexes and Nordost Red Dawn power cords. My meter measurements often measure in the single digits as opposed to when I was in the city.

My question: Given the low reading on my meters and pretty good sound, would I further benefit from a PLC?