They are what they are... an excellent $50 power cord. Certainly they are better than the stock cords that are shipped with most equipment, but they are not the "Holy Grail".
For lower priced power cables, I would recommend the Jena Labs Power Cable and if you have the money, another recommendation would be the Shunyata Python.
For lower priced power cables, I would recommend the Jena Labs Power Cable and if you have the money, another recommendation would be the Shunyata Python.