Ditto, D-K above. Also, if you get 1 pc on trial, try first on pre or cdp; when connected, let the pre/cdp play a bit before you embark on serious listening.
Power cords - snake oil?
Excuse me for being skeptical but how in the world can a different power cord improve the quality of sound? I've been willing to upgrade my interconnects and speaker cables to a point and use a line conditioner / surge protector but why spend hundreds on a funky power cord ?