Nice review. I'm a fan as well. I think it's a great mod/addition to a passive (or even active) bass.
I do believe that the new versions eliminated the largest cap that the old 16 position ones had, 0.100F
I picked up one of the very last original Tonestylers and that last position, while attenuated volume-wise, definitely is in dub land.
I had it put in this bass:
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I bought a six position version for a semi-hollow that should be finished in a month or two so I can see how the last position(s) compare.