If you like simple, intense thrillers, this is your movie. If you're someone who appreciates logic and a solid plot, this is not your movie.
For some reason in this movie, a red light takes 5 minutes, police aren't helpful (no surprise), and the main character is pretty airheaded (in my opinion).
(Spoiler) There is definitely suspense and I'm glad that the director just goes for kills and it really shocked me, but overall, apart from human responding reasons, its a good movie.
(Not spoiler) I wouldn't watch it again but I'd put in the background for drinking nights.