For the best audio and video quality with the original broadcast English subtitles, look for 'Studio: MBC America' under Product Details. MBC America is the licensed US distributor for Yi San. MBC America works from the original MBC-TV master recordings and hires professional translators for the broadcast subtitles, which are also used for the DVD release. Each episode runs about 60 minutes.
D. Bannon is a professional translator. He has subtitled many popular Korean dramas, most recently Dong Yi, The Great Queen Seondeok Vol. 1 and Time Between Dog and Wolf. He discusses subtitle translation in The Elements of Subtitles, Revised and Expanded Edition: A Practical Guide to the Art of Dialogue, Character, Context, Tone and Style in Subtitling