I quite like Dark Pools even with the obvious bias. I will say that occasionally it gets technical aspects of things completely wrong, but that is pretty easy to do.

Also, as with any discussion about HFT look into the people who are making accusations against it. Most of the time they are ex execution traders made redundant by HFT or failed at HFT themselves.

Basically, I really enjoyed the history part of the book and found the expose part riddled with mistakes, obvious biases and vague terms that could be interpreted in many different ways.