I feel like ive used them all by now...fishman, baggs, b-band, emg...martin thinline is made by Fishman as i recall... Im using the K&K pure western pickup system on my Martin, its by far the best ive tried...its 3 specially designed transducers that you install on the inside of the bridgeplate, and it has the same endpin jack as most pickups. It is feedback resistant, has a really strong output for a passive system. Best of all, it realistically reproduces my guitar's tone, not the ceramic, quacky sound you get from an undersaddle pickup. The thing works great, is minimally invasi