I don't like them. They came stock on my Taylor and the coating on the strings "ragged out". I tried a couple more sets and had the same experience. To my ears, they were a little less bright than the GHS phospher bronze strings I normally use and didn't last any longer. And for what they cost, I can crank on three sets of the GHS for what one of the Elixers cost. My opinion, they're snake oil (like the Long John strings that came in a 3' long box so the strings wouldn't suffer from being coiled).