But despite his rise as a Lion and for Ireland, he admits the search for perfection continues.
"You never play the perfect match," he told the Irish Examiner.
"There are always things I am annoyed with no matter how well we play. The way we played overall against Toulouse in the quarter-final last season was great, but there were a few bits that annoyed me in my own game.
"I have talked to Joe [Schmidt], to Axel [Foley] and Greig Oliver about ways of improving."