I have Fralins on my Les Paul standards, one set of unbuckers and one set of humbuckers. Both have 8.5K bridge and 7.5K neck values. I prefer the unbucker and have gone from one guitar to the other to see if its the instrument itself.....its the pickup that i prefer. Very complex, very musical. I think its the best pickup you can buy today.
My Brian Moore has Fralin humbuckers 9K bridge and a 7.5 K neck. Fantastic sounding, and they work well split.
I cannot recommend these pickups highly enough.