I actually really liked the Gav Thorpe Dark Angels books. The Legacy of Caliban trilogy was enjoyable even after a re-read, and I thought Luther was fantastic. I cant say they were great literary works but Im not sure if anything from Black Library is. Im a simple reader and I enjoyed them for what they were. I can understand folks not liking them, but the amount of hating on Gav Thorpe's DA books has always had the same meme-energy as "The Dark Angels are a traitor chapter! hurr hurr"
Anyways, I think Ill be picking up the omnibus, and looking forward to Son of the Forest. Right now Im wondering how much it will tie in to The Lion AoO book, and if it would be worthit (doubt).