>>1740847I think you'll find Dan Abnett's Eisenhorne and Ravenor stuff very readable---fun, not too terribly serious. His early Gaunt's Ghosts stuff is also very passable military science fiction. Anything from the last four or five years, the series has gotten a little long in the tooth.
Every other black library author, in my opinion, is really terrible. I did have the opportunity to meet Graham McNeil at the BEA a couple of years ago and, while he may not be the best writer, he's a really nice guy.