While I still love this one, I think it may be my least favorite of the series (I'm not counting the new book as a part of the series). I really dislike the epilogue, and wish the trio didn't go off on their own for the majority of the book.
Harry, Ron and Hermione aren't going back to Hogwarts this year. Instead, they have to find the Horcruxes and hopefully, finally defeat Voldemort. Challenges await them like they never expected. Harry just hopes everyone can get out of it alive.
There are some deaths in this book that still make me angry (cough cough....Fred). The book has some of my favorite scenes in the series, when everyone turns into Harry, when they finally arrive at Hogwarts and several others.
But as a story I think this one has more flaws then the others. Still great, but not as great...