I guess I'm used to the 'ol standard, mahogany back, maple top, and rosewood fretboard. I used to dislike the way koa looked, but now, for some reason, I cant stop thinking about haveing a Les Paul single cut body style with a koa back, quilted maple top, koa neck, and rosewood fretboard, all natural with clear coat. *drools* I believe koa is supposed to be slightly brighter than mahogany isn't it?