I use these strings on a classical guitar buddy gave me a few years ago and on which I started on guitar. I found the original sound a bit feeble, I changed the strings for it and I think since it sounds much better. The sound is more powerful in the first volume, treble and bass crystalline deeper, in short it's as if I had changed for the better guitar. So when I pressed my friend, when he played with his guitar, I found the sound of low quality and I advised him to change the strings for this one .... The value for money seems very correct, especially as I now play mostly on an electric guitar. Maybe other strings are better? but not necessarily for less ... and then to each his ears and his practice ... the strings must be tested, listen, like any musical instrument ... but to change and try other brands as usual it can open other opportunities and enhance a guitar!