OK, I've just gotta jump in here...
Based
solely on what I've gathered from Ken's input in this thread, plus the extensive information in the two-three
other Acme Flatwound/Full Range threads floating around here - mostly from TalkBasser Bluesy Soul - it seems very clear that if you're strictly a "P Bass with flats" kind of player -
and you're using Streamliner 900 too - that the Streamliner + dual Acme Flatwounds might just be your dream rig.
By all means, probe away; get more opinions, complete your due diligence, etc. But once you finally circle around from all of that, you may just find that this one was the ideal rig for you all along...
MM