I haven't read Silentium yet, and although I adore the whole Forerunner side of the story, as of now my favorite is still the Human-Covenant War. Just so much information, so many epic battles, so much loss. The Covenant were scary back then, the Forerunners were extremely mysterious, Spartan II's and III's were the shit. ODST's were awesome. So much more that could be explored that we haven't seen yet. So much more happening then than Post-War with the pathetic excuse for Spartan's that are the Spartan IV's. The UNSC basically becoming the Covenant imitating Forerunner tech...