I forgot about D. Williams. I would say, at the very least, he was as talented as Farley, but I disagree that Ruud is more talented. Ruud is very good, don't get me wrong. Stew is very good. But I don't consider either one a difference maker. Farley was, Williams was, and Octavien should be. McKeon (sp?) perhaps could be considered a difference maker -- there's something about his personality that's unlike anyone else.
I possibly see as many as four difference makers on defense -- Carrricker, Octavien, Bowman and McKeon. Could be a great defense.