Theses are really nice strings. They have a great acoustic sound and are the best strings I have ever used. I get a good 8 months of playing between practicing and playing out a couple times a week. I think they sound better than any other string when I am using a pickup too. My fiddle stays in tune. The only time they seems to waver is when it's cold, it tends to go out of tune more frequently. I suppose any string would do that.