Massa will go well here, he traditionally has done, Alonso needs a car under him here to feel at one with the track... But on alonso, this track is a traditional engine breaker, and with Alonso using his Spa engine here, the one that did Singapore as well (i think) and how thin he is on milage per engine, i can see him blow a block here.
Webber won last year, and with a good car, goes well here too. Vettel likes the circuit i feel, but i can see him doing something, but with how thin he is on engines as well now, being able to challange the same way he would have liked to. May be asked to fall in and help Webber, or take the "gentlemans aggreement" route.
Hamilton has a mixed past with this track, will go decently well enough to do something. But will need help from Button i feel. The McLarens arnt as thin on milage as the Red Bulls or Ferarris, but lack that 0.2 a second in killer lap time.
Joker cards will be the Mercedes as i can see this being their style of track, MS is on a wave of form and NR has something to prove after 2 DNFs in a row. Kubica will go naturally well here, the Renault may be one of the better ballanced cars on this track. If the car suits the track id expect to see some Kamacazee Kobiyashai as well, this is his type of track i think.