It was much better than the previous Captain America movie. They've definitely improved almost everything from the first film. Captain America felt more like, a super solider in this film; he also used his trusty shield in a more intricate way. I think the fans will be satisfied with the work put into this project.
It had a decent plot, a interesting villain, (Winter Solider was a great choice) awesome action/fight scenes,(the stunts were thrilling)and a few laughs to keep the audience distracted and not bored.
I'm normally like Black Widows character but she seemed slightly out of place in this film. I give it a B+ and would definitely see it a second time.
Just like every other Marvel movie, there's a special scene after the first half of the closing credits.