re: Trey's guitar tone > Barber's guitar tone

This is true. The electronica scene has surpassed the jamband scene.

My job has me working with high school aged kids on the daily. The kids with tie dye and hemp necklaces that I used to be into jambands are now into electronic music. They'll still wear some Grateful Dead shirts because they're cool, but they don't know shite about the Dead. It may come back around, but the live jamband scene peaked a while back and has been replaced with electronic music.