Coming back to quality: I thought the characters, the writing and the genuine feeling emotions a dopey comic book movie like Guardians of The Galaxy brought to the screen were miles ahead of what was shown in critically overrated works of nothingness like Boyhood. Usually I do find them quite funny as well. Then there's the Cap movies which actually deal with some very intereting themes. They also feel completely different from the rest. The second one in particular reminded me of old-fashioned spy flicks. Not so much of your typically restless summer blockbuster. They aren't particularly quippy either. I also loved what Shane Black did with Iron Man 3.
Of the more recent ones, the one I enjoyed the most (even though I missed Sam Raimi's sense of style and epicness a bit) was probably Spider-man Homecoming.
I think it's the Assassins Creed problem: Most of these games were at the very least pretty damn decent, but if you consume one (or even more) of them in a year, the formula is gonna get stale unless you really switch things up.
I haven't seen Boyhood but I loved GoTG. While it had lots of humour, it was well inserted into the plot (Drax based jokes fit well into his rage and slight austism that the character was confirmed to have) and I really enjoyed the story about a bunch of random a-holes coming together to save a planet. The chemistry between all of them was also incredible.
On the other hand, I really disliked Spiderman Homecoming. I prefer the Sam Raimi movies by far and actually enjoyed The Amazing Spiderman reboot (after months of a mix of expectations and dread because its my favourite Marvel superhero). I found Homecoming a bit too childish for my taste and too long for what it was.