I'll take the Detroit trio.
Maltby-Draper-McCarty
Toe be serious, I picked Zetterberg-Datsyuk-Hossa, but I assumed this poll is for this season only. Hossa likely won't be a Red Wing next year, while Heatley-Spezza-Alfredsson are locked up for 6, 7 and 4 years respectively. The Detroit trio are all in their prime, but the Washington players are all younger and still maturing, and while Alfredsson is aging, Spezza and Heatley are still relatively young too.
Right now the Ottawa trio doesn't look so hot, but they've made it to the finals before so we can't write them off entirely. The Washington trio, meanwhile, can only get stronger.