Hey Gang, I have a Carvin LB76 with Koa body sides. When I first got it I replaced the stock bridge pickup with an EMG Active (so far I have run EMG actives in the bridge position of all my basses...), but I have never been happy with the support of the low-B string as the J-bass style pickups really don't have a wide enough pickup area to support a 6 string. I am REALLY considering getting a pair of the Bartolini xxM56 pickups, probably a xxM56M split coil for the neck position and a xxM56C or CX for the bridge position, and have a few questions. Is there really a big tone difference in the "deeper" vs. "brighter" option they offer? Is there a strong enough difference between the xx56M or T split coil vs. the xx56C quad coil to justify the extra expense (note, I do prefer a humbucking pickup sound....). Last thing, I run my basses stereo, that is, I have a seperate output jack for the 2 pickups and run them each through seperate gear and cabinets matched to the lower and higher sound of each pickup (ie: Rick-O-Sound or Billy Sheehan....) I have read and heard great things about the bartolini's, but am looking for additional input before I buy `em and take a router to the bass (no worries, I have years of luthier experience....) Thanks!