I've traversed the first 300 pages now, of Klinghardt's "Marcion", and let's start with the first things: he knows very well how to demonstrate that Tertullian is purposely obfuscating things when it suits him.
An interesting point that the raises is the fact that the 3 witnesses contradict one another so very often, but the best is demonstrating how Harnack as well as Roth so very conveniently look away when the going gets tough.
In essence, each of these two should have caught the errors in their own theories, but they just happily hop across giant omissions in the tradition, for instance the fact that Jesus does not read Isaiah in the synagogue in chapter 4
Another failure on Roth's part is that he pretends to not care about editorial intent, while each and every time he bases his decision on the presumption of Lukan priority.
Klinghardt is decent and smart enough to disclose his agenda, so that we get an insight into his thesis and can justify the choices he makes, based on those
Buy the book Ken, honestly, it's more than worth it and not expensive: it's got the same price tag per page as Goodacre's Thomas and the gospels, and that was a grand disappointment whereas this is the finest piece of research that I've read in years.
You can buy 5 books of 275 pages, or this one, and the total price won't differ much
Klinghardt is very convincing, and Marcionite priority solves quite a few issues that are caused by the inconsistency and disagreement across and between the 3 main witnesses. Other than that, as I found out myself, holding a real "Q" in your hands works wonders for the SP!
It's going to be a very, very busy next 12 months for me but I am really going to enjoy them; these are tremendously exciting times.
You better start liking the inevitable outcome