Upgraded power cord for Vandertseen 5A's?

Does anyone have any experience/advice for the use of any "upgraded" power cords for the Vandersteen 5A's?

Thank you
If you haven't dropped in Dedicated 20amp AC circuits for your system; that will provide the best bang for the buck in improvements. I would do this first before spending on powercords for the bass amps.
I am currently building a new dedicated room and yes I am planning on doing that.