Near-death stories about seeing heaven don't do much for me because they are unverifiable and they don't add anything to my faith. I'm going to believe in heaven whether I hear them or not.
I guess there are people who think, "Wow. I never believed in heaven before, but since that little boy told his story about going there now I believe." But I'm not one of them.
I'm much more impressed by the stories of Muslims in the Middle East who say Jesus came to them in their dreams and preached the gospel to them, and have converted because of it. Those have the ring of truth.
See here.