I'll second the praise for the Puritan Conditioners - great value for money and an improvement over prior conditioners I've tried - whether and Isotek or PS Audio Regenerator. The nice thing about the Puritan is that it does not appear to limit dynamics.
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 .