So have perused all related threads could find. So one final ? while focusing on a pu swap. I need to put a hb pu set in the MIA Jazz fretless due to the noise - just gotta do it as pretty much solo the bridge. No probs with the stockers on the fretted counterpart. Desired results: Full range mwah on the solo'd bridge with no noise. Like the woody tone from the Fender - vintage is good but not required. Like clarity and balance in tone with butloads of mwah. Mwah is there now (but can't stand the hum and commercials from the radio station) with stock pu's. Leaning to the dual over the stacked hb's. Like and considering the Model J but would like to try something different. Nord's Lindy's BL's possible but focusing on Barts - but unsure prob the 9J#4 over the #1's for brightness or the 9CBJD's. Sight unseen I'd go for the CBs from reading. Any one using one of these Barts in the fretless J? Aloha and thanks, David PS: Have and like DM J type in my Aluminum Neck Fretless Kramers. One has a DM Model J the other is a Shaller Double J at the bridge. I need to use the Modle P neck on the one with the Model J just to beef up the bass and bring down the brightness a bit. But boy those sustain and mwah for hours if you let them.