I was also going to suggest fantasy/sci-fi as a 'break' from the heavy stuff we've tackled lately. Jonathan Strange was a bit long, you're right. Odd book.
Vonnegut ... I dunno if I need a reading group to read Vonnegut. Can sit down and read almost any of his books in three hours. Just my two cents. We'll need another big thread to decide anyway.
EDIT: I think I was slated to make the next round of posts but I might be making that up.