"Power Cords-More Recent"

Do you have a dedicated 20 amp circuit for your listening room with hospital or better grade outlets? If not before you do or buy anything we would suggest you invest in one. Some people think power conditioners have a negative affect on there equipment it is easy to determine if that is true just listen to it with it in the system and then without it, then determine which sounds best to you. Personally we think power conditioners with surge protection is cheap insurance against your equipment getting destroyed or even better and cheaper unplug everything when you are done. As far as changing power cables, after you get a dedicated circuit installed go to used cable.com they have many selections in power cables at usually half the price of retail but more important they have a 30 day return policy. In your case you can try a cable that was originally $800.00 and if you don't like it return it or get another one to listen to, you can't beat that kind of service it is certainly better than getting stuck with thousands and thousands of dollars of cables that you or your system don't like. We think you have some pretty good cables already but there is better, the trick is finding the right one. 

Most of the power cords in my system are Cardas, Acoustic Zen, or Wireworld. At the $400-$500 range, they are almost equivalent in my system. I would recommend Wireworld from your list.

Have no experience with Audioquest or Morrow in my system, but Audioquest has sounded very good in dealer systems also.

Have been down the power cord rabbit hole... not like some on here but have had a few from PS Audio & Audioquest. On a buddies recommendation I bought a couple of Audience, "Power Chords" and have never looked back. Really only tried to talk myself into believing the others made a noticeable difference. The Audience Chords for some reason really sounded different and improved my system in a positive way. Bought them 15yrs ago and they weren't cheap but, if you can come across one or more of these in the used market I strongly recommend them. Just my opinion and everybody has their own favorites, but these work famously for me. 

Having had a vast array of different cords over the years in varying configurations my take is that having the biggest gauge of OCC copper tends to sound best: think Acoustic Revive and Nordost Valhalla; many of the multi-litz cables suffer from timing related mushiness.