I wanted Heather to win TDI, since she was the only character (bar Duncan near the end) to actually strategise and get people off the show. The others just followed the bandwagon on voting off who messes up or that they dislike. Understandable but boring.
In Action the antagonists seemed non-existent. Justin looked promising then faded into obscurity and Courtney was just an ANNOYING antagonist. None of the characters really deserved to win in that season. It was just bland. Although since Geoff is my favourite character I guess he'd edge this.
In World Tour? Alejandro or Heather again. Although I admit that Tyler, Sierra and Courtney also could have won and deserve it entirely.