Thanks, good to know.Trust me, try those! They're purposely disbalanced between the coils, which makes the split tone a lot better and louder.
Big difference with a split Super Distortion; which becomes weak and thin/brittle/bitey.
The Air Norton -when used as a neck pickup- split gives you a beautiful, big, bell-like bluesy, yet clear single coil tone.
I have the Air Norton in 3 guitars; 2 of them are coil-split, one is parallel split and while it doesn't add hum, it's more lacklustre compared to the true coil-split ones.
From Duncan, the SH-16 Custom/59 Hybrid splits well, as does the Screamin' Demon. Pearly Gates neck split is a bit more meh; loses a lot of output.
I basically add push/pull pots to all my guitars, if they don't already have them.
DiMarzio Breed Neck, when split, gives me the best Master of Puppets clean-interlude tone.
The DiMarzio AT-1 ain't no slouch either, split.