I love this film it might not have the best story ever but for a survival film it is really good. I would recommend this to anyone with a blu ray player as it has great special effects. I would give it 4 out of 5 for picture and 4.5 out of 5 for sound. If you have a hi fi system then this film is a huge leap from dvd to blu ray in terms of sound. This film is cheap now so pick it up with another survival film such as Deep impact.