I agree with Driveright. I've owned the Foundation Research LC-1s and LC-2 for 3 years now. And they have been excellent line-conditioners and rated as the best by Bound for Sound.
But that was the old version of the LCs. I received the new version about 3 months ago, same model numbers, only a very slight size change in the small enclosures and the new versions are simply multiple times better than the original versions.
BTW, the LCs come with their own built-in power cable and cost only about as much as good power cable.
-IMO