First of all, I'm not a professional musician and judge here this set of strings purely subjective to the few comparisons that I have. I use the same set on an old Höfner guitar and there was the sound improved remarkably compared to the previously reared set of strings and the guitar really sounds so better to classes. So I wanted to try on my Spanish guitar that also here the sentence does not sound too bad, what strikes me, it is quite noisy (the guitar sounds much louder than before verwendetn Hannabach and Aranjuez strings), but something is missing the brilliance, therefore only 4 stars. I would also add that the strings even after several weeks playing not oxidize.