True Grit dialog: It has always bugged me. I don't know it if is true, but I've read the author looked at writings from the time period and concluded people didn't use contractions. That was somewhat true of WRITING, but there is no reason to believe it was true when SPEAKING. That led to the movie having what seems like very stilted dialog to me - "Well, I am going to..." instead of "Well, I'm going to..."
I thought the original Maddie was awful. Kim Darby was too old. I've read she was also difficult to work with on the set. Glen Campbell was a better singer than actor, although the dialog would have been tough for anyone. John Wayne was over the top in some parts, but I liked the scene where he was talking to Maddie about his past life. I think his best acting, by far, came in the quieter moments. My favorite of his was in "The Cowboys", because he did a great job of being a tired old man who was out of options. And of course, for the True Grit shoot-out, he was hard to beat. That was an "over the top" scene!