I'm ready the Horus series now. Love the Ghosts, can't wait for the next one. My absolute favorite is the Eisenhorn trilogy. Ravenor was good as well. Dan Abnett is currently working on the third inquisitor trilogy called the Bequin trilogy. Can't wait for that one. The ghosts books and the Eisenhorn books really put that universe on a more personal level that feels great to read.