Power Conditioner Helpful?

I think the above poster who said try a used one on the gon has a goint point , this way you can resell it if it does not produce desireable results in your system. Sometimes I feel filtered cords going into filtered Power conditioners can actually harm the results of your sonics , However I have heard the reverse, some after market cords sound like magic plugged into a P.C.
As an aside there are some that can perform a little magic on a Large Screen television. But as far as should you get one, we dont really know , its voodoo man !