nglazer-You nailed it! Have heard all the powercords you mentioned with various demos with the exception of the LessLoss Signature which has a very strong and respected following. I would like to add the HiDiamond model 3 to the mix. I have 2, one on my Valve Audio Predator and the other on a RSA-Elgar. The HD3 is a big sounding(aggressive) fast, detailed powercord. What it lacks in(some) refinement can be forgiven considering it's cost. The HD4 is claimed to be at another level but I doubt $1k is enough to snag one on the used market.
