Martin Lifespan MSP7200
The MSP7200's came installed on my new DRSGT Martin from the factory,(purchased at Sweetwater, I play in a church trio, and for leisure). After a couple of months, I tried a set of the,"light" gauge just to see any differences, really seemed to have the same play ability as the mediums, not quite the depth or volume however. Again, after a couple of months, I ordered a set of the mediums, and found the medium's to have the depth of sound and volume I first remembered when I received my new guitar. These (MSP7200) will be my strings of choice from now on. Rest assured, you will not be disappointed with the sound or the ease of play of these strings, and they have a long life!!