A Thousand Sons review

I completed A Thousand Sons, by Graham McNeill a few weeks ago.
It was not my favorite of the Horus Heresy books, but it may have been one of the most informative. I'm withholding judgement on some of the characters' actions until its sister book is released detailing the opposing view point.
So, from a purely 1k Sons viewpoint, the book was a very well thought out progression of a loyal chapter with a horrible taint. It was interesting to discover all the knowledge that the 1k Sons held and just how they used it. I thoroughly enjoyed the human characters (as I usually do) and their slow understanding of just what is happening, an understanding that the Astartes just never seem to grasp with their feelings of infallibility.
One problem I had with the book was the jargon aspect, though that wasn't too bad. Sometimes it seems like Mr. McNeill learns a new word and severely over uses it. Heqa Staff? That was the most glaring one. It's used constantly.
Overall, however, though it started slow, it was a good read. I thoroughly enjoyed the characters of Magnus and Ahriman. I especially loved the imagery used on Magnus, like how he'd change colour and size depending on his mood.