While everything is going great for City at present I don't see them qualifying out of their Champions League group. I think they'll have further problems from Balotelli down the line also.
They'll have a blip in the league at some point and it will be interesting to see their reaction.
Overall I felt United would do enough to be above City this season at the start of the campaign and one result does not change my mind.
Delighted to see a new team finally pushing the more established teams. They've brought a lot of enjoyment back into the EPL. Imagine how boring this season would be if City were still a mid-table team.