I will second Fiddler's response, although I have not heard the GG Rapture power cords. I have heard many very pricey cords, from Nordost Valhalla, to Shunyata Aplha Helix to Purist 20th Anniversary, Elrod Statement, Stealth Dream, Dream State Lucid Dream, Virtual Dynamics Revelation 2.0, and many, many more. IMHO, I actually think the power cord has more to do with the sonics of the system than interconnects and speaker cables.
Anyway, the Stealth Dream is the best power cord I have ever heard and/or owned. At one point I owned 5 of them. Unfortunately due to the economy and family obligations, I have now sold all of my Dreams....
It would have been nice to compare a Rapture power cord to the Dream, but I never had the opportunity.
I still own what some would call decent cords, like the Kubala Sosna Emotion, Shunyata Anaconda Vx, DCCA Reference Master, Verastarr Grand Illusion, Ridge Street Audio Poiema!!! Signature...etc. None of these can compete with the Stealth Dream however.
Yes, the Dreams are not cheap.....but they are the best that I've heard.
Cheers,
John