Just spent a few days, pretty much non-stop, re-reading this series, because I had remembered it was so good, and I was not disappointed.  Each one of the five volumes could stand alone, but each built on the prior volumes and sustained and increased the force and momentum of the story. Good character development and interesting, realistically portrayed characters that you could relate to and be interested in, well-thought out, exciting plot, enjoyable writing style and an easy read; the right balance between believable technology, inter-personal relationships, and adventure. All in all, this series is a very exciting and satisfying read that makes you wish for more books about the adventures of Kylara Vatta.