If you've never upgraded a power cord before, I'd read
this first for a counterpoint [thank trikos for the link].
If you want to do a basic test, find the cheapest replacement cord you can find, like a 99 cent item at Big Lots or the like. Then switch it out with the Stock Outlaw cord and see if you can tell a difference - if so, you can probably discern a benefit from an upgrade. My opinion, and I reiterate that it's opinion

, is that the transformer quality makes the only difference in the power circuit, and no $100 or more power cord upgrade ever made a difference to my ears.