What is the best design for power conditioners?

Considering a Hydra 8 which has its own unique design or a more conventional balanced power type. I experience varying degrees of sound quality due to apparent varying degrees of power contamination. I guess EMI and RF are the most suspect. Any input would be helpful. Thanks.
Ceb222, EMI and RF on your AC line are like 0.0001% of nuthun and are readily gobbled up by even the smallest most humble capacitors inside your components. Trash on the incoming ac line is the issue, much of which may be being created by your own components. In any case, I like Richard Gray Power Co. just because my favorite two dealers have had more frequent success with those in a variety of installations, but there are several viable products out there. Buy 2nd hand and experiment is my best advice.