As much as is pains me to say it I think Arsenal will win the title again. The only hope the other teams have is if a couple of their main players get injuries at the same time or they have a REALLY bad run (their lucks going to run out soon).
I think Man U will finish second, they are starting to get their big players back from injury and suspension. The addition of Rooney (hat-trick on his debut

) will be a major plus point, as is Rio Ferdinands return from his 7 month ban. Hopefully with Rooney and Ruud banging the goals in and Rio bringing some stability to the back then they have a good chance of pushing Arsenal right to the wire.
I think Chelsea will finish a close third. Reason I say this is although they have a team/squad which costs over £130 million they are only winning by the odd goal. I think it could come down to goal difference for 2nd/third spot.
Bolton have really surprised me with their good start to the season.
I think Liverpool will get the last Champions League spot as Newcastle are too far back to make the ground up.