Personally I don't like most splitted neckhumbuckers. They often sound weak and not close enough to a real strat. If you really want a splitted tone in the neck, I would look by example at a VHII neckhumbucker. It does a reasonable strat-ish tone when splitted.
Another route: choose a neckhumbucker with enough sparkle in humbuckermode. That would be a RiffRaff.
