Thanks to you all. And thanks for the references. I'm not afraid of the technical stuff (been teaching and translating biblical Hebrew for almost 15 years now and tho' BH is a lot simpler than BG, I've come to expect that in all thing linguistic, they are often more complex or nuanced than they may first appear. As for the video about the history of Koine Greek pronunciation, go for it if only iIt would be a great help to the newbies among you. Im very thankful for your thoughtful responses.