"Please list the aftermarket power cords you have compared to stock power cords?"I have compared a few stock power cords that came with different pieces of equipment. Some thinner, some thicker. I report that I could not discern any difference in sound.
If power cords matter in terms of sound, are all the stock ones clones that sound equally good (or bad, if you are a proponent of more expensive products)?
Instead of advertising expensive power cords, why not compare stock ones and report how they sound? It may be helpful to those on the budget.