I really expected that Voldie was going to win, especially with all the rumors and hype I had heard prior to the book being released, so the ending kind of surprised me. Like, it was totally unexpected! But I must say, I kind of liked it, one of the few things in that book that I did like. It seemed kind of fitting in a way, given the fact that Harry had taught the DA members Expelliarmus in OOTP and placed such importance on it that this should be the spell that would end it all. Also, the whole part about the elder wand choosing Harry for its master and all that, that was kinda interesting.