They arent. The Discovery ones were plauged with horrrible editing and an awful squish job to full screen. Most were from season 6 7and 8 as well.
The BBC America ones have edits, but its mostly to fit the comercials, but are pretty true to the originals, the aspect ratio is closer to the real thing, and they are showing stuff from seasons 8 and 9, so they arent too far behind the real thing.
Anyone who gives a poot about this show downloads it anyways.
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