I've about decided that perception of quality is very subjective. For instance, Cluin believes that Gibson is sweeter than Martin- and I tend to believe the opposite. Martin, to me, has a very identifiable sound that I experience as 'sweet'. Gibson, to me, has a shallower, brighter sound.

Buddy Tabor has fairly severe GAS. As a general thing, he prefers his Gibsons and has definite preferences for recording. He also has Martins, including a small sweet-voiced treasure that he likes but does not love. I think there is a good reason for it; Buddy's voice, while not actually harsh, is supported better by the Gibsons.