I've re-read this trilogy probably half a dozen times in the past 13 years and it never gets old. A wonderfully written saga that is emotive, captivating and somber. Perhaps what draws me back again and again is the feeling the writing evokes for the world in which it's set. You can tell the author has steeped this story deeply in the Scottish highlands, and even now I can almost feel the bone-deep cold and damp, bleak and chilling atmosphere that permeates both the environments of the story, as well as its general tone.
The books are pretty bleak reading. There are few jokes, and the situations and straits the main characters often find themselves in are always heavy with emotion, generally regret or alarm or fear or sadness. Whether it be a weary old soldier just trying to return to his family to retire, or a young man displaced from his home and all he knows, to be thrust into a world full of danger and fear. Or a lonely, shunned outcast who tries to make sense of the curse he's inflicted with. Loss and grief are themes frequently explored.
What's great is that the antagonists get as much treatment as the heroes do. By the end you're left with no uncertainty about their motivations, their thoughts and hopes, and the choices they make which lead to, oftentimes, disappointments and failures. The author has worked hard to maintain a solid sense of realism within a fantasy framework.
Perhaps the only criticisms I have for the books is, A) many of the names are utterly incomprehensible, and impossible (if you don't have a familiarity with Welsh or Scottish language, I'm not sure which) to pronounce. Do your best. And B) there is quite a lot of repetition of certain elements in books two and three. The world starts to fall apart, and no expense is spared letting the reader know all the tiny ways in which this occurs. There was a certain amount of the last book, especially, which bordered on 'filler'. That being said, the story is compelling from start to it's rather bitter end. Though it might be written in a high fantasy style, I'd classify this more as Grimdark. Or if not all the way grim, then at least Greydark. And if that's not already a term, I hereby coin it.
Well worth the investment.