I love Quinn and Barney! I still think it will be her. Barney and Robin don't work on any level. Why would they create essentially the perfect love story and then just destroy it? I think it'll be a double wedding, with Ted as the best man of both (we already knew he was going to be Robin's best man, and can assume he'd be Barney's). They like giving us a plot twist, and I think the premier will be bringing it back to being Quinn and Barney. He never loved Nora the way he did Robin (and she was awful, so good), but he never loved Robin the way he did Quinn. Even in the Star Wars Trilogy episode, when he was Robin, in three years he was going to be with a one night stand, but when he was with Quinn, he said he wanted to be with Quinn in three years.