I am currently reading my way through a long list of science fiction and fantasy titles. (http://www.npr.org/2011/08/07/138938145/science-fiction-and-fantasy-finalists if you are interested in the list).
Wow, you can read and read in this series and barely make any progress! And I say that despite the fact that I'm still enjoying the series.
There are so many details to remember and I find I'm dredging my memory, trying to remember plot points from previous books. Still, I'm muddling on--perfect recall isn't necessary to enjoy the current action.