WordMan, Learjeff and others, thanks for your thoughts.
While I do play chunky and use a heavy-gauge pick (the Fender “Dorrito”-style ones), and often play with the edge of the pick rather than the tip, I don’t think it could be said that I pound the snot out of my guitar!
Also, the guitar rarely leaves its case when I’m not playing out — which is twice a week at most. (I’m a lazy sod and seldom practice — God knows I could benefit by doing so in terms of my lead playing, but my rhythm playing is very solid, and that’s what’s most called-upon with the repertoire I’m currently playing.) So I don’t think this is environmental issue.
And actually string buzz is not my problem. Again being a physical player, I’ve always said that I’ll live with an action that’s a little higher than many prefer if it means avoiding string buzz, which I hate. And my guitars have been set up accordingly.
The last time I brought the Martin in, though, the action had got so high that it was damn near unplayable. It didn’t start out that way, but got to that in less than a year. It was then the bracing system was put in. Again, all was OK for a few months, but now I notice that the high E and B strings don’t ring out with the same strength as the others. It’s hard to describe; not really string buzz, but they sound twangy and weak. I’m at the point where pouring more money into the Martin yet again makes less sense than just buying new.
So maybe I simply got a bad guitar that’s beyond help. Or maybe there’s something to my original theory that a cheaper one won’t stand up to the added tension of medium-gauge strings.
Again, I’m prepared to spend a bit more this time; I just want something I know will be durable and not keep going out of whack. I’m sorry if I left the impression that I’m abusing the thing! I don’t think that’s the case.
FWIW, I see this wording describing the Taylor 210ce Rosewood/Spruce Dreadnought Acoustic-Electric Guitar:
“The Taylor Dreadnought is a focused guitar with plenty of presence, recently redesigned to be even more assertive. It’s the traditional choice for the traditional player; the model to drive with a heavy pick.”
That’s me all over!