What's everyone's preference for series vs parallel on each of the pickups themselves while we're at it? The idea of changing my new FDVs to series (since the z3 would've come parallel by default, I believe) is an interesting one!
My Z is passive with coil switches. I typically run it SPS.
I also recall seeing that's how the non switch models are set up. Probably somewhere in this thread.
To my ears, if the two pickups are right next to each other, one or both needs to be in parallel to tighten it up a bit.