I'm looking to find a Jazz pickup that has a modern tone to it. Something that delivers very full lows. I'm not looking for a vintage tone as I have access to a couple of old J and P basses. These will be going into a 2010 Fender CS Custom Classic. I've had the Bart 9J1's and may go back to those but just wanted to get your opinions of what has worked well for you. I've read very good things about the Fralin split coil but dont want to pay the new price to get them. And have considered the Aguilar split's as well. One thing I would like to know is where Barts have the quad coil option. Is that just for different wiring options or is providing a different sound that the normal split coil? I have have Nord singles in there now btw. If there is a thread that explains some of this please post!