I just picked up D'Addario Phospher-Bronze today and put them on the Martin D-15 after I adjusted the neck relief angle and the saddle. Now the git is low and fast and the new strings sound wonderful. Might just be a new favorite in place of the Martin Marquis. I have used the Martins for twenty-five years. No, I don't change much.
Pippin, I switched out of Martin Strings just recently and was a die hard 80/20 SP user. No more. Can't comment on the Marquis's, but frankly the SP's were just "stiffer" and less musical for me I realized and with the D'Addario PB Lights I could simply get more variety within a warm yet certainly articulate enough context. What doesn't get stated enough IMO about the SP's is that the treble strings have been "improved" but suddenly it was like they just sounded wrong to me. The other thing about the SP's: Martin themselves list the PB SP's as "brighter" than the 80/20's. Makes any sense? No. In short, I'm out of there like over night. I do think the D'Addario PB Lights are a classic themselves for a reason and least in my own case consider my SP usage kind of unexamined.
With that said, will also give D'Addario 80/20's Lights a try.
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