Power cord that improve the soundstage the most?

Getting back to the original question, the JPS labs cables are great at increasing a soundstage, because they highlight the top end a bit more than others. They could be an issue if your system is on the brighter side though. The Shunyatas have very defined imaging, but won't give you any more perceived soundstage depth or width, because they're pretty 'thick' (but not necessarily slow) in the mids. Purist is great if you have a system that is very revealing up-top, and you'd like a more 'organic' sound.
Without knowing how your system sounds, that's about all I can add.

JPS Labs Aluminata. Once you try this pc in your system, you will understand. I got mine for half of retail here. Yes that still is a lot of $$$.

Tplavas,
What is the status of your own line of power cords?

Sherod,

I'm still talking to the beta-testers to try to get the clearest picture of what they're hearing, and then integrate those ideas into what I'm hearing. I specifically chose people that I know and trust, and who have systems that run the gamut of what's out there. So far the majority of them have found at least one model of our PC's that they've liked, and wanted to keep, which makes me very happy, as I really am trying to create PC's that don't sell the 'one size fits all' philosophy, although they will all share a 'house sound'.
Honestly, I'd really hoped to have my cables out there by now, but like the audiogeek that I am, I just can't help trying different permutations. And now we're approaching the worst time of year to introduce a new product. :(

If you'd like, I could send you a pre-production model in a few weeks, just to hear what you think. At this point, I'm already prepared for cheers or boos, since I know that it's impossible to make an audio product of any kind that will please everyone.
What PC's are you using now, and on what gear?

I'll email you privately. Thanks.