I loved it. Obviously, the bar was impossibly high after the first, but I feel like this movie did a better job of fleshing out several characters (Hawkeye in particular) than most of the rest of the MCU flicks have. I, too preferred the Days Of Future Past Pietro, but I enjoyed this one a lot too.
And they did a great job with Wanda and Vision. Great intros for those two characters. Also
loved that they sorta kinda planted the seeds for a romance between those two
Marvel continue to knock it out of the park with regards to casting. Every role was perfectly cast, especially Spader. His Ultron was terrifying BECAUSE he was sort of jocular. He'd have been much less intimidating if he was just speechifying the whole time. Him having a bit of "humanity" made his "beliefs" that much more chilling.
The mid-credit scene kinda felt like more of the same, but I'm still excited for what it means.
I'd put it behind the original, Winter Soldier, and Guardians at least, but it's still in the top tier of the MCU