Having read CtFC, v. 2 in December, I wanted to read the rest of the series. Of course, that means things are a bit spotty. And somehow, I thought I'd read v. 4, but I didn't. So that's on my list for the next time I go to the library.
Things get stranger and stranger as the series goes forward. It's hard to talk about things specifically without giving away too much of what's happening. But suffice it to say that major things happen to just about everyone involved. There's dimension hopping, betrayals, complete surprises... it's definitely a page turner.
I think I need to reread them all, though, in one sitting. I know the hit and miss reading that I've done has caused me to miss quite a bit. But even with that, it's truly an epic story that explains why Final Crisis was as dark as it was.