SI #1 was a great comic, the two follow ups were pretty ****.
sI #4 should be good because Nick Fury IS BACK!
Otherwise the Mighty and New avengers have been decent in leading up the side stories about the invasion, and certain characters being switched out. All in all, I hope it doesn't turn into Civil war. Started off great, then half way through it exploded in a supernova of ****iness.
And surprisingly despite the fact I really hate the Fantastic four, the SI:FF wasn't too bad, which I only read to keep current on the event, and i actually want the next issue to come out.