I recently picked up a MIJ 75 RI jazz bass that came with EMG-J pickups and the sound isn't for me. I feel that the EMGs on the Jazz were trebley and can't get the low end and warmth I want. I do like the snap it gives me when I pluck the strings. I was thinking about getting a J-retro anyways so I think the bass boost will give me some low-end back, but I kind of want to do everything right the first time. What pickups add bottom end, warmth, crisp highs? I'm using my jazz as a slap, funk, bebop, misc. jazz, some rock.