I have found the vast majority of the Marvel Now stuff to be so much drivel. Captain America is nearly unreadable, Iron Man in space is laughable, Uncanny Avengers has so many characters wrong I dont know who I am reading and those I think are the three worst offenders.
On the Positive side Indestructible Hulk is pretty solid, I am enjoying All New X-Men far more than I thought possible and Superior Spiderman is the best book Marvel is putting out right now.
Most everything else falls into the who cares pile. Thor started strong but has been the same story in every issue for at least the last three. Fantastic Four is not advancing the main story quickly enough. The other Avengers books are just not interesting, the Starbrand story is very poorly done from a charcter standpoint.
Its also not helping that they keep trying to wedge books into the Ultron storyline which should have just been released as a stand alone story in another timeline and be done with it.