Significantly more low end and general thickness on an MFD in the neck position than there is on the stock JB pickups IMO. I also have a JB5, though I left stock pickups for something with more MFD-esque tone (JBE JB-5 Pickups). The MFD will lack some of the high end definition/brightness that a JB single coil can get. I am usually not after high end when I am running soloed neck pickup, but understand that some do.
Thanks, exactly the kind of info I was looking for.
I totally agree: that excellent bright high end definition is not the overall goal with the neck soloed on a jb.
In a recent thread about "modern j basses" a TBer said they thought the L2K was the logical conclusion for a jb. Interesting point, I thought.