Torro Rosso i expect to have a strong showing, particularly with the young drivers they have so determined to prove themselves, they will be "grabbing the bull by the horns". They will be on par with the likes of Lotus and Force India.
Im expecting a step back from Sauber in performance this year. Losing James Key at such a crucial time will dramatically affect the team.
Top of the Field will be about miles, with Red Bull charging off into the distance closely followed by Ferrari once their initial tit fiddling has ended. Mercedes will also be trying furiously decypher the secrets of the Pirelli's.
Mclaren and Ferrari will waste a lot of time on exhaust evaluation only to find the FIA banning what ever solution they so happen to chose.
Mercedes being late comers will have an interesting car, that will either pull them into fighting with the top order, or see them be challenged by the Mid Field
HRT wont make the Tests, why break tradition. Maruissia will be consistantly last struggling for grip and pace whilst Caterham will be struggling to find the 1 second it needed to bridge the gap to the mid field.