Martin HD-28 w/upgrade - - Many guitarists consider the Martin HD-28 to be the best sounding of all Martin guitars, and when you remember that Martin has remained a leader in acoustic guitar manufacturing for six generations, you know the Martin HD-28 must be something special. The Martin HD-28 features include herringbone top trim, the traditional zig-zag backstrip, and Martin's scalloped X-bracing. A classic deserving of the name, Martin! Includes upgraded Geib style hardshell case.