Netflix is great if you're a big movie watcher, but if you leave them lying around unwatched, it isn't worth the monthly fee. I love movies so it works for me. I don't buy that many anymore at all.
I much prefer in renting, it is must cheap rather than buying it, sometimes i buy it if thne movie i will watch is my favorite and i always want to replay on it
It depends on the movie you want to watch. If it's something you won't watch again, then renting is preferable. But if you think you're going to watch the movie again and again, it will appear cheaper if you buy it.