Many iconic guitarists own many different instruments over the course of their career, and many—like Stevie Ray Vaughan, who called his most cherished six-string his "First Wife"—develop a deep love for that one special guitar. Whether it's a well-aged acoustic or a banged-up electric or an axe assembled from bits of this and pieces of that, some guitars just have that certain je ne sais quoi that makes them as famous as their owners.