About halfway through Knights of Sidonia. It's not great. It started off alright; the nobody thrust into the spotlight is an interesting enough trope. But it got worse as the episodes went on. The main character is literally an otaku straight from 4chan. He has a harem that he neither recognizes nor seems interested in. Heavy handed exposition is galore, with major characters standing around explaining back story in what must be the weirdest conversations ever. There's also a talking bear for some god damn reason. Oh, and it's rendered at like 8fps or some shit so it looks slightly strange as well, like weird slow 3D anime, but I suppose that's a matter of taste.
It has some good elements, the sci-fi ones like human photosynthesis and breaking dead people down for energy is cool. The fight scenes are cool, shit everything about the 'Guard' mecha suits is cool. But everything else is shit. It reminds me of Eva, where the fights and themes are compelling but the second Shinji starts fucking sulking again I can't help but get annoyed and turn it off. I'm confused that people called this 'Attack on Titan in space', since it may be similar thematically but is completely different in execution.
tl;dr don't watch Knights of Sidonia. Next up is Death Note.