0.5? Out of 0.6 right?
I can't give this a five star rating by the fact that I didn't crap in my pants from the awesomeness, I came close though. The best part of the whole issue was the reveal at the end, and no it wasn't a skrull reveal. The series has been solid, however you have to read at least one of the other Avengers books to know everything that is going on. I'm only reading New Avengers and seem to understand everything pretty well.
The invasion is a great idea and it's nice to see Marvel pulling off a giant story arc right for once, the past few story lines have been lackluster to me or just ended poorly and I'm hoping that doesn't happen here.
I highly recommend this book, great filler while you wait for the next Final Crisis book. I shouldn't even call it filler, but too late.