harry potter 5, have u seen at the big screen?

All of the chapter of Harry Potter from chapter 1 to 4 I have all watch it but i don't know what is more better if the book or the movie because i am not reading the book itself but i can say that watching the movie is the best. I haven't seen Harry Potter 5 but i want to watch it sooner. Many people says that this movie is not that good like the other 4 don't know why that's why i am curious and want to watch it.

My children and I are going to see it tomorrow for my sons birthday. I'm looking forward to it as I love all the Harry Potter movies and books. We intend getting the book as soon as it comes out also.