Master

This series gets better as you get through it. The first book initially read like the script for a video game, but it gets better in numbers 2 and 3.

I thought Crusader #4 was overly long, but this one was about right. The characters have little more depth, but for my taste there is too much emotional introspection from the main character, Cyrus Davidon.
Book #6, Warlord, is promised this year - I shall probably read it.