It wasn't as amazing as the first one, but it was still a damn fine and entertaining good time. It's kinda unfair to compare the two since the first was just this big crazy pay off for something that had been building, and this is "just" a sequel that brings everyone together again. No one really gets short changed in the character department, even the people who don't get a ton of screen time like Fury are there for exactly long enough to be worthwhile without feeling contrived or convenient. With the way that Phase 3 is shaping up I was worried about how it'd happen, but everyone left on good terms here for the most part, and it all made sense. Steve and Tony are clearly on opposing ends of what'll end up becoming the Civil War, Thor is off to get involved with events that'll lead to Ragnarok, Banner is hiding away until he cameos or they need a heavy hitter for Infinity War, and so on.
Ultron was a little too quip-y for me, but he's acceptable to the core of the character from the source, which is what these movies do really well. Though really, with James Spader as the voice it's what I should've figured. Still, it does give a good reason for the snarkiness, what with Stark being his creator and the attitudes of both JARVIS and FRIDAY. Vision was an interesting take, since it did still end up with him being at core the same character, though I figured he'd pop up earlier as someone Ultron "frees" from servitude and has to reconcile his prior life as just a program with what he was now, ultimately choosing the Avengers' side. It worked though, so no complaints. I liked what they did with Scarlet Witch and Quicksilver, and how they completely avoided the, being saddled with the "they used to be and sometimes still are bad guys" label they inevitably got stuck with in the comics.
It still weirds me out a little that the two actors played husband and wife in Godzilla and they're twins here though.
Final random thought, I really appreciated the fact they they made a point of trying to save civilians in the movie. They did it in the first as well, and I'm glad they kept doing it. There was a metric assload of collateral damage, and people certainly died, but unlike certain other heroes they at least tried to keep everyone safe. I really wonder if it was a giant intentional jab at Man of Steel because they made it SUCH a repeated point when showing them evacuating people would've been enough. I appreciated it though.
I'm really looking forward to the next few movies. I have to give it to this one, it tells a complete story while properly setting up what's to come without coming across cheap or like bait.