Limbus, Inc.: Book II has got a really great lineup of contributors. Joe Lansdale is one of my favorite writers. I've rnjoyed eyerything I've read by Jonathan Maberry. I've generally enjoyed Gary Braunbeck's Cedar Hill stories. I've only read a couple of Harry Shannon's books, but I thought they were pretty good. I haven't read anything else by Joe McKinney, but he seems to be reasonably popular.
With that lineup, this book must be good, right? Yes, it and no. As with the previous book, I really don't think it really hangs together very well as a shared world story collection. Limbus is supposed to be a sort of pandimensional employment agency. The problem I have is that in some of the stories Limbus seems to be fairly benevolent, but in others it is utterly malevolent. The stories themselves are mostly good though.
Maberry fan's will probably really enjoy his story, which is a crossover with Sam Hunter (from the previous Limbus book) going to Pine Deep (which Maberry wrote a trilogy about) and teaming up with Joe Ledger (who is the star of Maberry's most popular series). Joe Lansdale tells a story about a shadow government, a dinosaur hunt, and the Hollow Earth, with Allan Quartermain making an appearance. Gary Braunbecks story, which I found disappointing, was about a librarian who is kidnapped by Limbus and turned into a slightly more psychotic version of James Bond. Harry Shannon's tale is about an alcoholic who gets a job involving time travel and a quest for redemption. Joe McKinney's story is also about an alcoholic on a quest for redemption, only with a ghost instead of time travel.
Realistically, I think most people would be less bothered by Limbus's ambiguous nature than I am, and the stories are really good, so I'd say that you should read this book.