Neal,
I think very highly of the Valhalla cords too. If I were to demo my system to try to impress others, the Valhalla would be my go-to cord. I have just found that over the long haul, I can not live with them long term, as they tend to decrease my desire to listen for extended periods. I have tried them several times because they are so impressive initially, but I always seem to catch myself listening less often, I feel due to information overload on the brain, so out they go.....again. LOL! I found that in my system, the Stealth Dream provided most of the resolution of the Valhalla, but with just a hint of musicality that allowed me to use them over a longer term.
The Elrod's are a different animal altogether, more like the Purist Audio and Kubala Sosna power cords that I've owned. Full bodied and musical. Not as revealing and articulate as the Nordost or Stealth, but with more musical weight and power. I've yet to hear a cord that does it all. Those that provide more resolution tend to also be leaner, while those that add more weight tend to lack resolution. I tend to blend my cables and cords to try to get a little bit of both, but I probably lean more towards the warm side now than I did years ago, when I was chasing the higher resolution. Now I'm more about just relaxing and listening to music rather than having to hear that last minute detail in the recording. As always, YMMV.
Cheers,
John