I ran across this document while searching for info on 607/587 a month or so ago....
I have to say it's the most in depth critical examination of what I like to call "the big 3"(144,000, Arianism vs Trinitarianism, Destruction of Jerusalem) I've ever seen...
It's basically from the Catholic perspective, but I find that's good for research since that's basically who the borg pits themselves against...
I have to say that for the first time in my life the Trinity as a philosophical concept actually makes sense to me... though I don't think I could call it a belief of mine....
Just a warning it took me a long time to get all the way through... anyways, if you enjoy this type of stuff check it out and let me know what you think!