I have several nice guitars; a few Martins, a couple of Gibsons, a Larrivee, etc. I have been monitoring the action on them since last fall. Every guitar except my Taylor 522 12 fret has required several action tweaks over the course of the seasons (I live in Pennsylvania). The Taylor's action stayed solidly unmoved all year at 5/64" - Bass string at 12 fret. And amazingly, I hardly ever even have to re- tune the guitar even if it goes unplayed for month. One can argue tone and timbre, but Bob seems to have perfected the neck joint with the NT!