Damn, this is an old thread. My only contribution to it was a post explaining why I never bothered going the Chemex route. Here I am now and it seems to me like I've been using a Chemex for ages. Only way to go.
As for me, 24g and 16oz of water. Spent about a month dialing that in, and Tbs are just too inconsistent. Besides, everybody should have a scale that measures grams. I found long ago that I needed very little caffeine to keep me going, so I gradually tapered off. Once I got below 25% or so vicious headaches start to keep me up at night after a few days. I now blend 70/30 decaf to regular and it works great. No headaches. Peps me up in the morning. Easy on the tummy. Nice dark and bold bean for the decaf, and typical breakfast blend for the reg. One of the local roasters at the neighborhood Central Market. Half & Half and a bit of brown sugar and it works great for me.