I think every film buff should have a #1 favorite movie... even if in actuality they might have dozens.
Other movies come along and become temporary #1s, sometimes they can last for years, but eventually I always come back to
To Have And Have Not. That movie hits all the right notes for me, humor, romance, intrigue, snarky remarks, Bogart and Bacall, the good guys win, the bad guys lose, etc, etc.
Still hope someday in some vault they find a better copy of the film, they did the best they could with the current Blu-Ray release but it still has issues due to the best copies they could find being in worse shape than other movies of that era.