Some pros and some cons...

Rating: 7/10 (11 December 2019)

There really is a lot of Spoilers for both the movie and the book here so be warned.
Let me start off by saying that I have read the book and had some issues with the book as well (even though for the most part I love Stephen King books) so despite the fact that there were many changes from the story line of the book I knew going in to this movie that I was not opposed to having some elements be changed.
Pros: 1. The actor that plays Pennywise is amazing, as he was in the first movie. Really, he is mesmerizing when he is on screen. 2. Thank GOD they gave some build up to having Ben and Bev end up together (this alone brought my rating up a few starts, honestly). It made me nuts in the book where it was more of an afterthought after everyone had left Derry "oh yeah I think she left with Ben" after she had slept with Bill and showed no real inclination to poor Ben. 3. The casting was great and the actors did a marvelous job with their parts. 4. No weird child sex thing at the end (pretty obvious they were going to omit that but still)
Cons: The absolute biggest con (and really it is a big con) is the CGI monsters. They reminded me of an early 2000's line of Golum's cousins . Honestly, if we could replace all of these CGI monsters with...really anything else...scenes that started out as scary would have stayed scary instead of becoming laughable. The whole movie would have been much more successful in my opinion and I think they should do a reboot where they keep the rest of the movie but ditch the CGI monsters and re-release it. For instance, when they had the old woman running nude in the background when Bev is at her "old house", it would have been much more scary if they stayed with that idea (sort of like the old woman in the bathtub in the Shining) instead of having her run out of the dark as a giant monster. 2. I still didn't like the way they killed Pennywise but did find it funny they kept referring to Bills bad endings (even Stephen King made a jab at it!) as if making a commentary on the IT ending itself. 3. I wasn't a big fan of the direction they took with the "chud" ritual and Mikes role in it--it ended up making Mikes almost sole role in the film a walking spout of information about how to use the ritual to kill IT and then having him be wrong about it anyway.
There is more but this is from the top of my head after watching it a few moments ago.