John, this method has caused quite a bit of controversy. Mason (of Ilford) in his textbook more or less says that it is not archival and others have agreed. A lot of math was used in his proof which I posted here and there on APUG.
I have run tests and find that there is nothing better than running water, but you must judge by water conditions (salt content) and drought conditions.
Speaking purely from my own experience, I've only ever used the Ilford Method and occasionally check my neg's. Even the earliest ones from 10 years ago still look as good as the day they were done. Contrasty, no fading and plenty of edge detail.
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