JWoods, funny you should bring up Herbert Armstrong. My mother was studying the Armstrong material (it came mail order at that time) when the JWs came knocking at her door. They convinced her that Armstrong was only interested in money and, of course, the next lesson from the WWCoG said that she'd received 10 lessons from them, couldn't she give them a 10th of what she had? That's why she quit studying Armstrong and started studying with the JWs. The fact that the JWs knew that would happen made her feel they had "superior knowledge."
About a month or two ago, there was this guy on a cable infomercial (Friday nights at midnight) and I would have sworn, with a very few exceptions in his speech, that he was a JW. He spoke for half an hour and never revealed his denomination. I googled him and discovered that he was a WWCoG man.
It was striking just how similar his speech was to the WTS's writings.