I've always been more of a Marvel fan then a DC fan (though I do still like DC's heroes, and I will always have a special place in my heart for Batman and his supporting characters and villains)
It just has more of my favorite superheroes. (Wolverine, Spider-Man, Captain America, Hulk, Iron Man, and Deadpool)
Subject of the MCU, I think The Incredible Hulk and Thor: The Dark World are their worse movies, not that they're terrible per say. But they're kinda mediocre.
Most of the other movies, are pretty good.
But the ones I personally think are REALLY great are Iron Man (the first one), Captain America: The Winter Soldier, and Guardians of The Galaxy.
I have not seen Ant-Man yet, but I hear good things. And I don't watch the shows.
Other Marvel movies I like, outside the MCU, include
Most of the X-Men movies (Except Origins: Wolverine, and yes I even enjoy The Last Stand to an extent)
Spider-Man 2, The Amazing Spider-Man, and yeah I like The Amazing Spider-Man 2 (Though I acknowledge the movie is flawed)
and Blade, and Blade II (Fact, I wanna see Blade, either rebooted, or a sequel, to be added to the MCU. I think it could help bridge out the MCU to the more supernatural/dark fantasy setting)