I love the new ending

That ending has pretty good style.

Is that girl Mio or someone else?

It's modern in comparison with the old one, but the song feels overworked. I'm sticking to the old one.

hmm? SE 2's ending is quite 80's based. While SE 1's is the modern sound.

I do wonder if it would have been best to have Mio do the Opening and Yui do the Ending. Because the Opening is (as described) maniac and could use deeper vocals, while the Ending is just a bit bland, and should be a bit peppier.