I mean, wow. I didn't rate the first TASM very highly because the story felt a bit tame somehow, but this was near-perfection. It starts off with a bang straight away, and then somehow manages to mix humour with action and drama perfectly. The action scenes were nearly almost fantastic (the showdown between Electro and Peter at Times Square is a massive highlight - Winter Soldier levels of amazingness imo), and the drama was written well convincingly enough to make me tear up at the cinema. The only thing I would have preferred is if the "villain" felt like more of a threat. I think his story was snowed under by the rest that was going on in the film a bit. Sometimes less is more.
Also, there's a mid-credits scene of a certain other EXCITING THING