Best and least invasive off the shelf pickup options for vintage guitars?

[gmm55]

Thanks for all the replies. Will study them and do some other research.

[chasapple]

I have found the soundboard/bridge plate transducer pickups like K&K pick up more handling noise during performance. Like the instrument moving against your belly/chest during play. Just one factor to consider. No perfect solution exists, they all have their drawbacks.

[SpruceTop]

The Trance Audio Amulet M Dual Mono isn't very invasive, and the transducers, affixed with "permanent tape," will peel off the bridgeplate without leaving a superglue mess should you want your guitar as "virgin" as possible when removing the system.