The only version that I'd recommend is Finding Neverland (2004), which is really about J. M. Barrie, who wrote Peter Pan, rather than the Peter Pan story itself.
What I liked most was the insight into the playwright who penned Peter Pan. Yes it's sentimental, but what in the world is wrong with that? We see so many movies that revolve around the negative, that it's refreshing to see a film that channels more positive emotions.
What intrigued me was the few brief scenes of Peter Pan being performed on stage, that's what I want to see more of! Have you ever seen Peter Pan (1955) or Peter Pan (1960) both starring Mary Martin? I'm keen to watch those.