I purchased these in medium for use on a Taylor GS Mini-e Koa and on a Gibson J-50. These strings seemed to come to stable pitch very quickly - Better than most new strings. Also, the tension and feel of the strings is excellent. The tone definitely "checks all the boxes" for Phosphor Bronze, with above average volume, and a fine balance between warmth and brightness. Highly recommended for guitars with a neutral to slightly bright character. For guitars with a warm or dark character, 80/20 strings might be a better choice. Still, these deserve five stars - If you like Phosphor Bronze strings, you will like these. Buy with confidence from Shoreline!