Hey, I will soon be purchasing a Taylor Guitar. Guitars are characterized by type of wood and then by the body of the guitar. I have decided on the wood of the guitar (specifically the 7 series which has a Rosewood back and sides), but I have a few questions I am trying to resolve. First, beyond aesthetics and the comfort of the player, what are the differences in the sound produced by the different types of guitar bodies (dreadnaught, jumbo, etc.)? Second, I was considering purchasing a Taylor acoustic guitar ("non-electric") with Expression System (ES) pickups, which cost extra. Is there a notable difference in the quality of the sound, either amplified or not, between an acoustic guitar with expression system and an acoustic/electric guitar that comes with the expression system stock? Will an acoustic guitar with the expression system sound better than its acoustic/electric counterpart because it does not have a cutaway? Thanks!