i like the Duncan Distortion...however, unlike James i dont hear any of the quack that he does...i hear that in the JB though. the Distortion seems to be fuller and fatter, while still having plenty of cut. compared to an 81 (which i have in most of my other guitars LOL) the Distortion is rounder on the bottom, more open sounding, a grainier texture to distortion tones (where as the EMGs seem to have a glassier sheen to the top), and are still very articulate with lots of gain, and have about the same output as the 81's (i can plug my EBMM with the distortion in and all i really have to do is cut some bass).