Hello, I see that there are two different releases of GI's complete collection. I was wondering what the differences are, and particularly if the 2011 release has English subtitles/closed captioning on it. I see that one set, I presume the earlier release, was 2-sided discs. Is the 2011 version too? I'd appreciate any info anyone has regarding this. I want to buy it for teaching English as a Second Language, and need the English subtitles. I am not sure whether the cheaper set has what I need or what the benefits of the more expensive set is. If anyone can enlighten me, I'd be grateful. Thank you!