Should you see Saw?

In this review of Saw, Roger Ebert lets the viewers know about what made Saw an amazing movie and what the producers did wrong. He also compares Two other movies in the same genre that had characters almost deal with the same problems. Ebert then goes on to list the characters and what special traits of theirs they used to make it a unique film that was remade into three stories. From this, Ebert lets his viewers know the basic truth, rent or buy the film?