I prefer the original too, I like the bass boost it adds as you roll off the treble! The greasebucket is good if you just want to tame the harsh treble without affecting lows if you're say using a pick and rounds, but if you're using flats and want that old school Motown sound, the original circuit where it's at.
I bought a greasebucket-esque Precision wiring harness from Kiogon, tried it out but ended up not using it. I've been meaning to list it with a bunch of other items but if anyone wants it, PM me!