I'm expecting the Mancs to go through also, but don't think its a sure thing. Their form as been off as lately, and if its Tevez and not Rooney not sure its going to be so easy. Also, Giggs has been hot and cold lately.
Big question is can Barca find their shooting boots. Fine play in the first leg, but not much on the final touch. I'm sure they will have more room this time round and Fergie will not be planting so many bodies behind the ball as he did in the first match, and with Brown in the CB role, they could easily get in with a touch of magic from Messi or Henry. They get ahead, and it will be their turn to sit behind the ball, and United might be in trouble.