I noticed the cgi on Richie and Ben big time. Richie looked like a cartoon his eyes were so big. Ben's head was huge. The rest looked about the same but I can tell they also used something to make the voices higher, especially Eddie.
I liked the movie overall. I thought all the adults were very good. Some parts could have been cut, like the beginning, even though I know it was in the book. I also thought the mirror scene with Bill and the kid could have been completely cut out. That kid popping up everywhere seemed kinda hokey, and we already knew how guilty Bill felt.