These are really good strings, I've used them on my Fender Fat Strat for a while now (3 or 4 years approximately) and from the start I've been impressed by how they sound better and live longer than the Dean Markley and d'Addario that I used before. Even new they don't have that excessive brightness in sound that some other brands provide, and the sound doesn't seem to deteriorate significantly with time (provided a little care, of course -- I use GHS' Fast Fret regularly). I couldn't expect better...