We ordered a number of these packs for our Spanish Guitar Academy. We teach Flamenco guitar, Classical guitar, Bandurria & Mandolin.
I've played & performed for 61 years on guitars from Spain's top makers. As my instruments are from the 1950s, 1960s & 1970s I would like to preserve the vintage sound they produce.
While performing both nationally & internationally, I was introduced to both Juan Orozco & his father. From them, I purchased the highest quality strings possible for these instruments. I use them to this very day.
My teachers, Richoly, Carlos Montoya, Sabicas, Mario Escudero, René Heredia, seemed at the time to agree. I think you will as well.
Diego Corriente
Musician