alder vs. mahogany. i'm building a custom 7-string with a bolt-on maple/wenge 5-piece neck with an ebony fingerboard and 24 stainless steel frets. 26.5" scale with a floyd rose. probably something like a Duncan '59-7 in the neck, and the closest i can get to the sound of a Joe Barden HB in the bridge (i.e., super clear, punchy/attacky without being harsh, tight, and ballsy). my guitars that i really like the Bardens in are quite different from each other (one has a maple neck and fingerboard with an alder body, the other has a basswood body with maple neck and rosewood fingerboard....both are 25.5" scale).