I don't think this discussion will reach a conclusion. After all, everyone has completely different preferences for sound, and it is impossible for anyone to try every power processor. But from my own experience, I would agree that the power regenerator you mentioned is better than the power conditioner. I am currently using PS Audio P12.
Power regenerator vs conditioner
If the goal is to improve the sound quality (soundstage, detail, dynamics, etc) and the issue is "noisy" AC, it would seem to me that a power regenerator such as PS Audio P15 would be far superior to a "conditioner" such as a Shunyata Denali or Hydra or Triton. Is this correct? Thanks .