Before I started using these strings I was using Light Martin SP Phosphor Bronze Acoustic Strings. They were the kind my dad used so I decided to go with what I knew about. That was until I went to purchase a set of the Martins and started talking with my local Music Shop Owner. He told me that he didn't sell those in his shop because they were made of mostly recycled materials and that hindered the playability and the sound. I took his advice about what he recommended I get and he told me about the GHS brand. So he gave me a set to match the old strings I was using in the GHS Brand and I went home and started playing with these. It was amazing. It sounded so much better and was easier on my fingers too. nice playability, good sound. what more could you ask for?