
I love horror movies, but especially the Saw series (I actually think it's one of the greatest horror franchises of all time). That said, even though there are more Saw movies than famed franchises like Friday the 13 and Nightmare on Elm Street, I still think the franchise peaked overall at Saw II.
Yes, there have been some highs and some lows in the series, which is natural for a series with 10 (and unfortunately, not 11) Saw movies. (I'm looking at you, Jigsaw). But overall, I think the franchise has been mostly successful in making us feel icky inside, while not always getting other things right.