Iron Man will feature in Captain America 3
Avengers: Age of Ultron Marvel Studios

Iron Man star Robert Downey Jr feels that Marvel's eagerly-awaited upcoming film, Avengers: Age of Ultron will be 'the best Marvel movie'.

"This new Avengers may well be the best Marvel movie, and by the way that's saying a lot, because I thought Guardians of the Galaxy was great," said Downey Jr during an interview with Social Chicago TV (below).

"Iron Man 3 turned out great, and Cap 2 was awesome. And there'll be some surprises in the next little while too," he added.

Just a few months back, Downey Jr said the same thing about Marvel's Guardians of the Galaxy.

"[Guardians of the] Galaxy in some ways is the best Marvel movie ever," Robert Downey Jr told the press at the Toronto International Film Festival premiere of The Judge. "And it's odd for someone with — on occasion — an ego the size of mine to actually say that!"

But now, looks like the Avengers 2 star has had a change of heart as he deems his upcoming superhero flick the best ever.

Avengers: Age of Ultron is slated to be released on May 1, 2015.