Sounds like another tournament for Federer to me (lost once in the last 30 games ish so definitely on form).
Del Potro on a bit of a role with a F, QF, F, W and SF since the start of the season (proving probably that he is back to being better than the rest) but will probably lose to Federer again.
Djokovic will probably beat Murray but with the 3-set format i can see Federer winning.
Tomic in the QF at Delray against Isner as well.