@rssb The Delta v2 is kind of my basic default power cable. I have several of them, and they are solid performers in my system. They are a significant step up from the earlier v1 version.
Compared to the new Theta cables, the Delta v2 seem somehow "slower" and less "live" - if that makes sense. Theta also seems to pick up more details of the room in which the recording is being made.
Compared to the new Alpha-X, the Delta v2 seems less delicate and refined. The Alpha-X also produces tighter and more impactful bass, although the Delta is decent on the low end. The Alpha-X exhibits more natural tone and soundstage depth throughout the frequency range.