I thought that too and it is logical however, I tried a Puritan PSM156 and it delivers everything you are looking for, and for a lot less money than a decent regenerator.
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 .