Black panther
Avengers
I have to take Black Panther out of the equation- I'm just emotionally biased towards that movie.
Favorite is probably Winter Soldier, but Civil War and Infinity War speak to the 10 year old comic book nerd I used to be who would daydream about these comics coming to life. The only thing that would be better is some kind of VR or AR movie that "happens around you" I just hope I live long enough to see some shit like that