I don't know if you're still interested, but quality-wise, I would go for erai-raws. There are some episodes from DDY that look better than erai-raws in Season 2 though(only checked a couple of episodes). So if you're a quality whore like me, Erai-Raws would be best if you don't want to hassle through comparing episodes and want a good batch. I've tested a lot of releases for AoT and only SCY, DDY and Erai-Raws are worth mentioning. There are some translation mistakes by DDY in Season 2(SCY uses DDY subs, that's why i've noticed it), so i'm not so sure about recommending that. I might edit this comment in the future after going through more stuff.