Alesha and Matthew. Quite simply the most endearing personality and partnership with a pro, on the show. Naturally, this then enchances the appeal of their dances and performances.
Matt and Flavia are in reserve. Despite the bottom 2 finish this week, they are far more appealing than any other couple.
If, in the unlikely event that both these couples are booted off the show, then I would plump for John and Nicole. Nice, unassuming couple and partnership. They don't appear to have a great deal of support, but are far better than the other boring couples remaining.