Source: comicbook.com
4. BEST: Quicksilver vs. The Prison
(X-Men: Days of Future Past)
This is a little harder to count as a fight scene, since really only one party is actively fighting, but it's close enough, and damned awesome.
In the scene, Quicksilver, Professor Xavier, Magneto, and Wolverine emerge into the kitchen of the facility where Magneto is being held for supposedly murdering JFK. As they walk out, a team of guards armed with plastic guns opens fire, and Quicksilver pops in his earbuds, escalates to super speed, and gets to work.
Set to Jim Croce's 1972 song Time in a Bottle, the scene is the best visual depiction of super speed that I've ever seen. It's cool and funny, and gives you a perfect look at Quicksilver as a character. It’s also by far the standout sequence of Days of Future Past. It shows that Singer still has something to say about the X-Men. Or had, at least.
As a whole, the movie is slightly lesser than First Class for me, but this sequence is maybe my favorite scene across the trilogy of 2010s X-Men films. Or at least, second favorite, after that scene in First Class where Magneto butchers Nazis.

