I find it hard to find books for StarKid that fall between Branches Books and Harry Potter/Percy Jacksons of the world.
He loves the longer books and reads them decently, but needs to take breaks from them, just from sheer length. It seems wild to go from hundred page books to 400 pagers (with small print).
I remember there being more, shorter books at that age (Lois Lowery, Judy Bloom, Louis Sachar) - and while I pull those books for my kid, I'd love to find more current titles for him.
mm1970 - I'd recommend The Westing Game if your kiddo hasn't read it yet (such a great mystery - it is the book I buy for all my cousins and cousins' kiddos when they hit 3rd/4th grade and everyone has always loved it!).