I was going to say "This is probably the best tie-in series" but I'm going to be more assertive... This is far and away the best tie-in series for AvX. While it has none of the major players in it, the discussions around Avengers and X-Men and the world at large are far more honest and real than any other title. Plus, Sentinel & Justin! Plus X-23 being made somewhat interesting. Plus, some really solid humor - particularly Herc's agony of defeat.