I liked this movie, but there were elements I did not like. As a general rule, I am not a fan of horror. I wrote an essay in college once, for one of my favorite two classes "Fantastic Literature" in which the assignment was to compare and contrast the Horror genre vs the Fantasy genre. As I researched the subject, I came to my own conclusions as to the difference. In Fantasy, there tends, by and large, to be a balance of supernatural forces, even if they seem on the outset to be vastly outnumbered. Whereas in most horror, the darker supernatural elements are the only one that exists, or if the lighter elements exist, they are cold, disappassionate and incredibly weak.
And that is still, beyond doubt, the truth in Drag Me to Hell.
The main reason we saw it was a firm desire to avoid Transformers: The Robot Testacles over the weekend, and because I'm a Sam Raimi fan. The female lead is strong and clever. In fact, generally speaking most of the characters avoided stale stereotypes, despite an easy temptation for the script writers to use them. It followed many tropes of the genre, while still taking things on from a fresh perspective. It also had just enough of "Evil Dead" to bring up nostalgic fun while at the same time incorporating the lessons that Raimi has learned in his film making since that time.
If you like Horror, you'll like Drag Me to Hell. If you like Sam Raimi, you'll like it too. I liked it, but certain elements, particularly the ending, were not enough to get me to change my mind and really like other horror movies.