Messiah Complex started slowly, but the weekly shipping schedule, combined with its use of four books' regular casts, meant it didn't drag too badly. By about halfway through, stuffs had really started to happen. The ending shakes up the status quo a lot with Xavier near-dead, the mansion destroyed, the X-Men disbanded, Mystique depowered and Sinister dead. I will not be sarcastic about a twist in issue #12 being that Mystique betrays the people you had thought she had previously defected to, as I was already sarcastic about it that time.. But we've seen that sort of thing before, so as to whether the new status quo will stick, or whether they'll get the band back together again in the next few months, we'll see. Uncanny 500 is out soon, which they'll want to do something important for. Overall, it gets my thumbs up. I don't think it would work as a standalone thing though, as it heavily ties into recent X-Men and New X-Men arcs and probably needs them to make sense. One can easily read it without following X-Factor or Uncanny X-Men, though.
Astonishing #24 was also out. This doesn't resolve the current arc, damn him, which will instead be resolved in Giant-Sized Astonishing #1. It looks, given CENSORED, that the second half of Joss Whedon's Astonishing X-Men fits between "Blinded By The Light" and "Messiah Complex", and the curious CENSORED of CENSORED in "Messiah Complex" makes it look much more likely that Joss is going to CENSORED or at least CENSORED CENSORED. The bastard.
Now One More Day has reset the clock on Spider-Man's character growth, Brand New Day has picked up the reins. I can't really put it better than this does (read the wording carefully especially at the bottom).