TAS lists these 5 power conditioners in their latest Editor's Choice Awards:
1) PS Audio Power Plant Premier
2) Audience aR2T/aR6T/aR12T
3) Running Springs Audio Dmitri
4) Synergistic Research Powercell 10SE
5) Shunyata V-ray II
This new generation of power conditioners is superior to previous efforts (and I've had many) in that they do not exact tradeoffs in sonic performance to lower the noise floor. I would love to gather the experience of this forum on these watershed products.