The Fishman Rare Earth Blend will be my next such purchase. Nothing else comes close. I'm currently using Mini-Flex internal mics and a DiMarzio soundhole humbucker sometimes. When possible I use a good vocal shotgun mic still.

Piezo pickups sound worse than my old Dodge pickup did with bad gas. They're old technology which has been bested many times and it is completely beyond me why they are still tolerated. The quack, attack, timbre and synthetic mush drives me nuts.

MoohTooh (Mooh elsewhere).