I've seen both movies and have been thinking about this for a while. Both are "based on real events" but Argo is billed as "entertainment" while ZD30 was, at least for a time, billed as "journalism."

Couple of weeks ago had a similiar conversation with a friend. Both movies depict the CIA in an operational context. Kind of fun to have a peak at how the CIA goes about their business. My understanding was that much of the documents on the events depicted in ARGO have been declassified, providing Affleck accurate information.

Aside from Argo's ending, which was easily seen as just Hollywood dramatics, thought AfFleck did a tremendous job of portraying the events. The photos at the end certainly helped reinforce that view.

As to ZD30, I think there's still a story to be told some day in the future. I would enjoy watching a movie accurately showing how the go forward decision was made, who was on each side of that decision, and how they argued and supported their decision. In the movie they showed that the go forward decision took some 100+ days after the complex was under surveillance. But they really didn't show how the decision was actually made.

but regardless of the reason I enjoyed Argo more.

I also enjoyed Argo more.