If you like Arthurian fiction then I'd recommend Jack Whyte's series (known as "A Dream of Eagles" in Canada, and "The Camulod Chronicles" elsewhere) consisting of:
1. The Skystone
2. The Singing Sword
3. The Eagles' Brood
4. The Saxon Shore
5. The Sorcerer: The Fort at River's Bend (aka. The Fort at River's Bend)
6. The Sorcerer: Metamorphosis (aka. The Sorcerer)
There's also a parallel and companion volume called "Uther" which takes place during the same time period as "The Eagles' Brood" but tells it from a different perspective. The series is narrative, and "Uther" is told in the third person. There were things that the narrative character in "The Eagles' Brood" wasn't privy to, that are cleared up in "Uther".
The Sorcerer: Metamorphosis culminates in the crowning of Arthur as High King of Britannia.
There's also a follow-up miniseries called "The Golden Eagle". It consists of:
1. Clothar the Frank (aka. The Lance Thrower)
2. The Eagle
This series is narrated by the Lancelot equivalent, and tells of the life of Arthur as King.
Jack has started a trilogy about the Templar Knights now. The first book in the trilogy, "Knights of the Black and White", was published last year, and the second book is due out this summer.
But in my opinion, "A Dream of Eagles" is his best work, and one of THE best Arthurian series ever written.