I have no interest in saw 4.
Saw 1 was amazing, the fact that it had your head spinning over who this man was. Starting to tell an intriguing story of a psychopath who likes to deal to his victims as they have dealt with life. (Tying the killing to how the person lives.) It was intense, it was suspenseful, and well, it was gory!
Saw 2... well... was probably the worst 2 hours of my life, not only did it turn Jigsaw into a blubbering idiot, he got a sidekick. For god's sake, why on EARTH would he get a sidekick. Not only that, but none of the deaths were associated with the Victim's lifestyle.
Saw 3, made up for some of Saw 2's embarrassments. However, some was the key word in the previous sentence. It didn't do any justice to the series as it has all been done before.
Saw 4 looks awful.
None of them are really "horror" movies at all, they are bloody movies. Violence in movies is fantastic, but when it's backed up by nothing it's a terrible idea. Imagine a war movie where we don't know the war, we don't know the sides, and all we can see is a scene where both sides are fighting for apparently no reason at all.
My Rating of the Saw Series gets a 3/10. The only reason it's that high is because the first one was so amazing. The only "horror" movie series to score lower than this is Final Destination. Which got a whopping -10/10. Any movie where one of the main character's name is Kimberly can't be good.
-Thor