Lets start declaring the contestant you like the least (do not use words like hate/dislike (mods- hate is a very strong word), and then put one quality/characterstic you like the most about him/her.
The advantage - you will be happy to say that you like that contestant the least and his fans will like that you like atleast something in their favorite contestant.
And please do not use - "ummm thinking..." "none"... etc.
For E.G. ( I am not using anyone from Gurukul, as I do not have any special feelings towards anyone) -
I like Remix Songs the least (they murder the real songs) but I like the beats in the songs (specially good for dancing).