I'm not an acoustic player (hence the very light gauge I'm reviewing)but have an Epi EJ200 for hacking around now and then....I've tried both Bronze and Phosphor Bronze and these give a bit more depth to the sound than Bronze which is too bright for my taste on this big but relatively quiet instrument..durability is excellent,tuning stable,response even across the neck and I'm happy they bring out as much tone as is possible from a decent entry level plywood acoustic.....