If you do decide to take the plunge make sure you download/purchase in 1080 as it makes such a difference to the viewing experience, especially where so many of the episodes rely on Ridley Scottesque use of darkness to convey suggestive terror etc.
Boom. Will download tonight and peruse.
Darin Morgan wrote this one, he of Clyde Bruckman's final repost and Jose Chung from outer space fame. It's going to be epic.