Lessloss on power conditioners/dedicated lines?

Through the myriad of reviews and comments on the Lessloss power cords i cannot find a definitive answer to this question-is the effectiveness of this pc compromised by using either a power conditioner or using this cord with dedicated lines ? I recall some comments that council against using this brand of cord with the two above mentioned,but i just can't seem to locate the source. I don't want to drag an old horse out of the barn on a cold morning, but.....is this myth or reality? What say you Lessloss users?