Agreed. I mean, "best" is VERY subjective and I would not try to determine one so I won't say it is the best exactly, but the greatest movie of all time IMO is Titanic. Unprecedented and the most legendary box office success, wiped all the awards possible, it's universal in it's appeal (it's huge in almost all of the world), became ingrained in Pop culture instantly, it's objectively a technical marvel and it remains till this day a fantastic movie with ageless visuals and extremely iconic for a lot of different reasons. There are definitely other contenders, but I go with Titanic.