Are you looking for comfort or challenge? I'm going through a massive comfort phase, myself. In the last little while I've reread Austen, O'Brian, Jane Eyre, Vlad Taltos, Diana Wynne Jones. (We will please not discuss the utter ridiculousness of using books about the Napoleonic Wars and an assassin as security blankets. Okay? Because we know it's about the language, first last and always.)