I envy you! I wish I could see them again for the first time!

Based on your remarks, I bet you would love "The War Lover", 1963. They used 3 real B-17s for the movie. Very realistic. I know this because my dad flew 32 missions in a B-17, and was assigned by the Air Force to them as a consultant for accuracy for the movie. He made the mission map used in the briefing.

He was also responsible for the "cutting the grass sequence". The director was just going to use models because it was too dangerous, but my dad showed them how to do it safely. The sequence is just terrific. The AF was mad at him for recommending it, but the sequence was very popular with the critics and he was forgiven.

P.S. How to do it safely: do it at dawn when the air is still. Station people at various locations around the flight path in continuous communication with the pilot telling him his altitude. Fly the route again and again, each time slightly lower.