Here is my current personal ranking of the Top Ten Marvel Cinematic Universe films, post-Avengers: Age of Ultron:
1. Avengers: Age of Ultron
Several issues of an epic run of my old-time favorite comic book come to full life on the screen. Astonishing how high Marvel has raised the bar on what we expect from their movies in a decade or so.
Better than any of the others, but "less" than A:AOU in nearly every measurable way (other than number of Loki jokes, obviously).
3. Guardians of the Galaxy
I love everything about this movie except the way the Nova Corps is portrayed and handled, and the way the Collector was used. The Xandar stuff sort of disappointed me. But the Celestials stuff and the Infinity Gems stuff make up for it. And Groot and Rocket are priceless.
4. Captain America: The Winter Soldier
A mini-Avengers movie. It says a lot about how great the top three are, that this movie is only at number 4. Because it is excellent.
5. Thor: The Dark World
Better than the first Thor in most ways. Bigger, bolder, more fun. My main disappointment was that the fantastic Christopher Eccleston didn't get to do more, or be more expressive.
My favorite of the first run of solo origin movies. So very Kirby/Simonson!
7. Iron Man
Seems so "small" now, after everything that has come since. But it is so much fun. And after waiting a lifetime, I finally got to see my favorite character come to life. And instantly go from "third tier" to the biggest Marvel hero of all. I still can't fathom that. (You couldn't FIND an Iron Man toy when I was a kid and wanted them!!)
8. Iron Man 2
Lots of plot problems (and villain problems) but the fun that Downey and Sam Rockwell have in it makes up for quite a bit.
9. Captain America: The First Avenger
Chris Evans hadn't sold me on his portrayal of Cap yet. (Does he ever do so later!) And the Red Skull is criminally (no pun intended) underused here.
10. The Incredible Hulk
No, the prison video from the Thor 2 Blu Ray notwithstanding, I still haven't forgiven Iron Man 3.