Evergence 3: A Dark Imbalance

I just finished reading this.
This is an excellent read. Each book in this series improved markedly on the last, and the first wasn't a bad book at all. Great action, great technology, hidden agendas revealed, galactic scale secrets and events uncovered. I particularly enjoyed the coverage of the different levels of intelligence around. Starting from the lower castes (sub-human intelligences) to mundane castes (including pristine and exotic evolutions of humanity), then covering strong AI and of course the transcended "high humans" - super intelligences resulting from many minds uploading to some new substrate.
Very cool, and worth the read through the whole series.