i bought these strings to replace the shop strings on my martin acoustic and they sound fantastic.
The sound is crisp, metallic and resonant while the stings are new. I do not play my guitar as ofter as i like and they have been on the guitar now for 2 years and still sound good so i would say they have good longevity.
Overall i would recommend these strings for any guitar, not just a martin. Great quality for money.
I bought those Martin strings for the first time and really wanted to hear the sound of it.
I was really surprised by the quality of those strings! The sound became much brighter and louder. The installation of those was pretty easy (they also comes in a really nice package, and you need to install 6&4 string first, then 5&3 and so on (which is good for your neck and truss rod, I suppose)) Also, they are keeping the tune very well. All you need to so is just to install them, tune, and never touch the tuning pegs again.. Unless you don't want to change the tuning ;)
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