What is your opinion of this product?
I have been using these strings for around 15 years on my acoustics and haven't had any problems with them. They sound good, hold up well. Of course I change strings often for live performance, to avoid problems; no set of strings will last forever. After they have been on the guitar a while, even if they look and sound fine, they will loose their ability to intonate properly. I get compliments on the sound of my instruments often the time. Is it my instruments, my playing, the strings?