If you want instant gratification, go download Ayako's subs for up to episode 6 then complete it with X_X's subs. They're not that great, but there's not going to be much difference with X_X's and the other groups' subs.
Checking their website like >>10729740
did won't help because if you haven't noticed, Ayako's website is broken and hasn't been worked on since right before the last season started.
Ayako-sae hasn't dropped the series yet, but they're really slow at it (I blame sae since that group is the one doing the translations, not Ayako), but if you're a archival/packrat/perfectionist, then just replace X_X's releases as Ayako slowly releases theirs.
And Okawari was a huge letdown compared to the first season, still enjoyable, but people decided to hate it and throw comments like "There is no second season" and "WHERE IS MY SECOND SEASON!!". In the end, it's what you like to watch and enjoy that matters, so if you just want to watch more of the daily lives of the Minami sisters, then I recommend Ayako-sae + X_X subs.
(And X_X sucks at encoding, but I wasn't complaining).