The AI/Raezer's edge combination has been in common use for archtop, and now it seems people are using it for acoustic too. A guy I play with has this set-up, and I have read Michael's impressions. I wonder about the coda or corus combo used with selmac. It's got to sound great also, but my guess is that it is not as loud or punchy, based on the speaker configuration. At the same time I would guess that it may sound "better" with microphone and perhaps other non-piezo setups, like dyn G. Also, I am guessing that the sound is maybe a little more acoustic sounding. I did not find anything when I searched this forum.