I'm trying to find "Ashita, Mama ga Inai" (Tomorrow, Mom Won't Be Here) to watch, but i only find bad quality. So where do you guys watch jdramas? 

If your concern is quality, what about downloading the files (via torrent client) from Nyaa/TorrentKim/similar sites, and then downloading the subtitles separately from d-addicts? That's my most preferred method anyway.

I use kissasian and dramanice. If its something ongoing, then torrent w/ soft subs.