This is the second review that I read that said Can't Buy Me Love by Jonathan Gould is perhaps the best Beatles book out there. I recently got it and I'll be reading it soon. It will have to be very very good to beat Bob Spitz' biography of the Beatles (which I write about here among other places.) But, let's face it - the world is big enough for more than one great book about the Beatles so it doesn't have to be a contest. I'm looking forward to reading it.
EDIT: Ron asked for a link to the Amazon site for the book - here it is.