On Friday 23 October - a week after I finished Paper Towns - I finished Wonder by RJ Palacio. I read it because Maisie had read it twice, and bought it after having read it, so obviously liked it pretty well. Jan at church, coincidentally, had recommended it to Bethan for Maisie, though after Maisie had already read it. I liked it too.
It did have a significant problem for me, which was that the sequence of child narrators did not sound like their age at all, but very mature; the nature of the book required that they be multiple first-person narrators, but they sounded quite similar, and quite adult. Having suspended that disbelief, however, it was otherwise well-written and interesting.