I think this year it will be a fight between Ronit and Sandhya in the end. Both have brought an incredible engery to the dance and both seem to be very into it and loving the whole process. Ronit might have the edge as he is more well known as Bajaj.
The X factor faves might be Negi and Sudha (my fav), but I don't see them getting to the finals.
Jay and Mini have the skills and the fan base and they might give the other two a run for their money. Mini trumps over sandhya in popularity so that might play a factor.
I think Ronit will have the edge both due to popularity and the skills/enthusiam he is displaying. So this year might be the year for the boys.