Saw was a classic in Horror Cinema History, original and still the most chilling of the series
in spite of having much less gore than the later films. 
Saw II was an exploitational piece of trash that sunk to the lowest common denominator of using negative-non-white-racial-stereotypes. I mean, it would have been JUST as realistic and NO LESS convincing if a sweaty-muscleboud-
white-drug-dealer had pushed a helpless girl into a pit of needles, but no, this being Hollywood he just HAD to be yet
another Hispanic drug dealer.
Saw 3, while not as good as Saw, was better than Saw 2; being an emotinally strong character study on the morality and philosophy of revenge.
Saw 4.... what a waste of celluloid.
Saw 5... I'm a film student, so I would
have to see it.... dosen't mean I would necessarily have to like it.