I couldn't put Wake down. I read it and read it until I was finished, I had to find out what happened.
It was thoroughly enjoyable, despite the serious subject matter, dealing with it in a very refreshing way. Wake wasn't afraid to delve into the very unpleasant effects of cancer, the way it affects every part of Jem's life. Having read at least one other book which deals with a teenager suffering cancer, this felt very real, not 'everything is normal except the main character has cancer, which only seems to be a problem for them when it's useful to the storyline'.
I liked the way it was told by both Willa and Jem, and how when something happens in one's point of view, you can't wait to read the next one's and find out how they felt about the incident. However, sometimes this went a little too far, when events were actually retold in the other's POV -- i.e. with time overlapping, which personally I felt wasn't always needed.
Also, I agree with another reviewer who said that Wake needed more editing. Wonderful read as it was, but there were just enough small mistakes to begin to jar by the time I neared the end of the book. I found it to be stuff a spellchecker wouldn't automatically pick up - words missing letters that made other words, for example, it should have read "kind" but it read "kid" instead.
Don't let that put you off though, I would reread this book and I've recommended it to loads of people!