I'd go with Hewitt. He's very mentally tough. I hate to raise the 'natural talent' issue again, but I do think those who have a lot of natural talent tend to flake out in the big events. Marat can be inconsistent - lots of talk about not 'feeling the ball' when his confidence is low. I wa s concerned that Fed would go down this road, but so far he's proved me wrong
Gaudio suffers from the jitters - and that RG final surprised me so much. I thought Gaudio would never be able to cope mentally in the final - and I felt it so unfair because IMO he is a better player than Coria and 'deserved' to win. I was stunned when it was Coria who folded.