I haven't seen Black Panther and Thor: Ragnarok yet but I kinda want to see Infinity War regardless.
Also, I voted for Captain America as the best sub-series because it's the more consistent:
Iron Man: Great - Bad - Didn't see
Thor: Okay - Didn't see - Didn't see
Captain America: Okay - Awesome - Great
The Avengers: Great - Meh
Guardians of the Galaxy - Great - Meh
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