I really like Claymore. I enjoy the manga as well. I think both are great.
I like the whole half human, 1/2 demon concept. Transforming themselves willingly. Traveling from medieval village to medieval village searching for the Yoma.
The Yoma a kinda cool monsters as well.
I like the art (look) of it all. The story lines are good, and the action is great. I like how the Claymores interact with regular humans, the Yoma, and each other. I have not found anything about I don't like.