Nordstrands in a fretless J bass
 

I'm thinking about replacing the stock pickups in my fretless MIJ '62RI with some hum cancelling pickups and was wondering which Nordstrand pickups would give the best bridge pickup "burpy" tone.
NJ4SV, NJ4SE, Big Splits, Fat stacks? I don't mind routing for soapbars if they'll be the better choice.
I'm open to other suggestions too (tried some Model J's and didn't like them), but I've always been happy with any Nordstrand pickups I've used in the past.

fretless J = SE
fretless SP= FS (BSp also +1)