Hi everyone. Back in November I bought a set of GHS Progressives. When I put them on, the A string was dead. I emailed Ben Cole on the GHS website, and he got back to me right away. He wanted to know what gauge I had, and what the problem was with the A string. The same day that I gave him the info, he emailed me back to let me know that a "replacement set" was on the way. Yeah, not a single string, but a whole set. The new set was perfect. I usually go through strings pretty fast, but these are lasting quite good. I wanted to try out some flatwounds, so I ordered some GHS Brite Flats. Any company that stands behind their product like that deserves our busuness. They sure added a loyal customer with me!!