Pyramid Double Silver Carbon HT Classical Guitar Strings, Full Set

Pros:
•Great intonation
•They stretch and settle down quickly

Cons:
•They initially sounded a bit cold and lacking in harmonic complexity
•The basses lost their brilliance very quickly, and sound tubby/thuddy after about 2 weeks of very light playing.
•Across the set, these strings feel much harder than most high-tension strings.

I think these strings have the potential of being used to good effect if your instrument sounds overly warm, and you're looking to add some brightness. However, for the relatively short lifespan of the basses, I'm not sure it's worth it. I've gotten much better lifespan out of Oasis and Savarez, and both of those brands gave more of the tonal balance and feel I was looking for. I found these to intonate better than Savarez Alliance, but the same as Oasis GPX.

It may be my guitar that is in need of a fret job, but the D string wore down in about 9 days and had to be replaced. Also over time the carbons are a bit metallic sounding, so, I would try these strings again, but for the price I'm not so sure now.

I enjoy trying new strings, always a challenge to find the right balance. These strings to my ears and on my flamenco guitar, sound very even and the tonality is full, solid, not tubby bass or unclear trebles. My only caveat other than the price is that on my bass shy flamenco guitar I found myself wanting a tiny bit more oomph in the bottom end, so I put on a Royal Classics low E. Wow, very subtle change but these sound great. Next time I will try the extra hard tensions.