I really disliked Book 11, I thought it was even worse than ten. Nine is saved by the end, but eight is where things really started going wrong...
And why are 8, 9, 10 and 11 only two thirds the length of the first seven? It's incongruous, and none of them feel complete (except perhaps nine). In Book 10 only a fortnight or something passes in the story...!
Once upon a time I absolutely adored this series, for all its flaws, but I feel really let down. For better or worse, it's become a part of me now, though...