I like the MCU, but it's too variable in quality to call it the best. The Incredible Hulk, Iron Man 2, and Thor: The Dark World are thoroughly mediocre, IMO. While I do like Iron Man, Iron Man 3, Captain America, and Thor, I wouldn't clamor for them to be best picture nominees at my most generous. The MCU has settled into an above average groove, but I don't know if they're really changing anything except for the concept of massive, interconnected franchises. And, I'm not convinced that's a change for the better.
For that reason, I prefer Hunger Games and POTA which haven't had a down entry yet, IMO. And I think Hunger Games is going to permanently change the viability of women as action protagonists for the better.