I own a PS P10 and could not go back. Hard to explain, but a layer of hash or grain is removed, a bit like polishing a window, and a sense of ease is imparted to the music. Be careful to only use components that have a peak power consumption that is within with the conditioner’s power envelope if you want to maintain dynamic capability. Using components which may seem to have moderate power consumption, but which require surprisingly high peak (transient) current, is I believe, the most common cause for dissatisfaction with power conditioners. Plug these into the wall instead.
Also own a couple of industrial 1KV 240:240V transformers that I picked up insanely cheap which do a splendid job on anything digital and phono/linestages. These were the real surprise package, as I have used other transformers before which squashed dynamics. These babies just let everything rip and really help clean things up a lot. Keep an eye out on the trade classifieds for bargains.
I don’t live in a particularly hostile AC environment. Hope this helps.
