My 522 12 fret is now 6 months old. I have several great sounding guitars and this is one of them, but what impresses me is that this one has the the most comfortable neck and the lowest playable action of guitar I've ever owned. The humidity in my PA home ranges from desert in the winter to tropical in the summer, but this guitar, albeit with the Planet Wave Humidipaks installed in the case, stays perfect action wise. My Martins seen to go up and down 1/32" with the season and need a neck reset after a few years - at least the dovetail ones. So far, so good with my all mahogany GC.