Tough one.
In the 4/4, manual all the way but as the engine gets larger like an XKR a manual is fine. Even in an XFR with the paddles who needs a manual an auto is actually quicker and as smooth as a 1600 grit wet and dried sand papered baby's bottom. However in a smart forget the auto!
Never driven an areo so cant compare but my experience is auto all the way.
