i have j style pickups in my ball5 and the aero's worked best for me.I've tried so many different really awesome pickups over the years, but once I tried Nordstrand pickups I was hooked. I really like the preamp you have, I think that same one is in my newest bass - Nordstrand 3 band. The pickups sound so good without a preamp I thankfully have a passive switch.
-ScottM