Ive just seen it.
I enjoyed it a lot but it isn't even remotely scary...creepy, yes but not scary. I did like that their real life issues (sex abuse, controlling mother, bullying etc...) was much more disturbing then Pennywise but overall it was not really scary.
The kids were great. They all felt like real children and all were developed well ( Mike could have had much more to do then they gave him).
There was an editing problem and it jumped a little too fast into dealing with the scares rather then build up tension and atmosphere.
Still I enjoyed it and I hope the sequel builds more layers.
8/10
It's better if you take it as a coming of age tale with horror elements