I am not a big fan of the Monster/Panamax grade conditioners. They are fine for a stardard HT system, but I assume you want to do better.
The Chang Lightspeed are nice units. So are the ones by Audio Power and Vansevers. For a few $$$ more a Richard Gray Model 400 will really clean up not only the power, but any outlet on the same circuit near where the 400 is plugged in.
For just cleaning the power, I am a big fan of those $100 Blue Circle BC86 Noise Hounds. Two are even better.
The Chang Lightspeed are nice units. So are the ones by Audio Power and Vansevers. For a few $$$ more a Richard Gray Model 400 will really clean up not only the power, but any outlet on the same circuit near where the 400 is plugged in.
For just cleaning the power, I am a big fan of those $100 Blue Circle BC86 Noise Hounds. Two are even better.