Anand, who do you prefer?

By this time Viswanathan Anand must be siting home and thinking “couldn’t imagine better future opponent!” as the candidates match is coming to an end with Boris Gelfand and Alexander Grischuk deciding who will challenge the world champion. Against both players Anand has positive scores and the last time they met, was this year in the 20th Amber Tournament where Anand beat both for a total of (as in

So with this record, is the best candidate to beat Anand coming out of this candidates format?