After 10 years and 8 films and 7 books, the culmination of the story is finally told. The character arcs are all tied up, largely, and the film stays as true to the book as is possible when trying to fit a good 20+hours of story into a little over 2 hours. It is difficult to comment on differences between DVD and Blu-ray here as I have only seen the blu-ray disc so far, however, I can say it is much better quality than the cinema version, at least on my system it is.
The Extras included are a much more welcome treat than the offerings of the previous 2 films, with a more detailed look into the creation of the book and the movie from cast and crew.
This film also brings back "Hedwigs Theme" in all its glory, which for me is the Harry Potter theme, after being left out of the last film as Harry never made it to Hogwarts.
If you only buy 5 films this year, make this one of them.