Torrent:
nyaa [dot] si
avista (need invitation and it's a private tracker)
Direct download:
dramahd [dot] me
drama-otaku [dot] com (need to register, best option since you can have Jp sub too on some dramas and multiple En subs if available)
doramax264 [dot] com (lower quality videos but smaller file size)
raredoramas [dot] com (for older dramas)
Apart from that I think most of the LEGAL streaming sites also come with CC option where you can disable the subtitle.
