RoderickF, one thing folks haven't mentioned - and I'm sure you're aware having played guitar for so long - that aside from pickup combos, try out a few basses to get a feel for the neck. Forgive me if I missed whether you've tried any out yet. You may or may not like how a 'Precision' style neck feels/plays. My two cents. As for the pickup situation, honestly I don't know that you can go wrong with either, but make sure it sounds AND feels good.
I've already played on a friend's precision bass and I loved the neck ! Thanks for help GreatScott
