Since when is "some of the scenes were "weak" compared to most typical Saw movie scenes" a spoiler?
It's just my opinion on the movie really.
Ooooooookkkkkkkkkkkkkkkkkkkkkkkkk
I'm just going to leave now....*runs*
ps: A spolier would be this...
THIS IS A SPOILER, DO NOT READ OKKKKKK
In case if the collaspe feature don't work it's down...
The best Saw scene was when the guy had his arms and legs pinned into the chair. Literally, pinned to the chair with nails or screws. He could only get out by pressing his face against tons of sharp knives which was a release button. Otherwise he would have to bleed to death. 
Now that is the best Saw scene of the movie. The rest are kind of just ok.