@lollipopguild I noticed in an earlier comment you remarked on their burn-in. Can I ask how they are likely to change?
They relax and settle in after they've been uncoiled out of the box, rested in place plugged in, and there is a form of discharging affect that occurs as part of the dielectric itself, and won't go into the wire-usage aspects. A few things happen, change does occur. It's been posted many-many times on Agon. Sometimes we feel like a broken record on this topic...
As @ghdprentice mentioned, I'm from the same camp of giving them 21-30 days, no joke. You'll hear it smooth out, more depth, mild texture comes in, and oddly enough becomes more engaging to listen to. More on the Cardas site. Enjoy.