You'll enjoy book 7 immensely. I've always found I preferred to read the books rather than watch the movies. These books are built on the details (with book 7 wrapping up not only major plot points but little details from previous books as well) and you cannot cram nearly as many in a 2 - 2.5 hour movie that you can a 700 to 800 page book. Nature of the beast in some respect. I do wonder from time to time what HP would have looked like if it were a large miniseries, capable of putting in much more details. Some books are just hard to translate.