Best to worst IMO:
Saw 2 This one is the most enjoyable for me , Det Matthews was a great protagonist for Jigsaw to play against.
Saw 1 Loved the main killer having a shroud of mystery and one of the best twists ever. The moment he got up I said to myself "this is the new ,"face of horror"
Saw 3 I didn't really like the Jeff character but Tobin and Shawnee were amazing.
Saw 6 Had one of the better plots , imo
Saw 4 The ending felt kind of abrupt but jon and his wife's backstory was nicely done.
Saw 5 I still really enjoy this and put it at the same as five. At the end of 4 , I was thinking to myself "why hoffman?" but they turned into something feasible.