C7 Power Cord Comparisons?

Has anybody had experience with more than one of these types of aftermarket cords? I read positive things about all of them over stock cords, but not against other aftermarket cords. The only ones I know of are:

- PS Audio Xstream Power Punch C7
- Audioquest NRG-1, NRG-1.5
- Cardas Twinlink C7
- Furutech G-320Ag-18F8

I can't decide which one to get for my PSX, particularly between the NRG-1 and NRG-1.5. I'll probably throw in a Power Punch to compare as well just because they're so cheap, but it would be nice to know if the Furutech is really worth the extra $$. The Cardas is hard to find.

I'd also like to know if there are other options.
You have two other options. An adapter (C7 to 320IEC) or change out the C7 chassis mount to a reg. IEC. I have one of these adapters if interested. Bill
i use the ps audio for one of my dvd player; it makes a not subtle difference. good value, altho' i've not used any of the others mentioned
Get an adaptor from Voodoo Cable and use your PC of choice, rather than limiting yourself to just the few liasted. I did that on my Wadia iTransport and it makes a huge difference in sound.

Would reterminating with one of these work?

Two more options are the Oyaide PA-22 ZX and the Zonotone 6N2P-3.5 Blue Megane cable. Both of these received accolades in the 2009 Visual Grand Prix. These are Japanese C7 cables, so they are not polarized, but they can be inserted into polarized inputs.

The Oyaide has a retail price of 12,600 yen while the Zonotone is around 22,000 yen.
The Zonotone 6n2p-3.5 might be the best. It's unpolarized. What might be better is an Audio Magic liquid power cable designed for the C7s. But they don't make 'em.