Not a lot of comment on the 50's 60's D 18 Martins...which I consider to the the best balanced for traditional music of all the Martins.... listed in this link.

I've had lots of different Martins and the ones I still like the best are the D 21 (no longer made) and the early "re-issue Martin "Custom Shop" D 18's.

One man's opinion...... Patrick Shields