-the last really good one was Spurriers X Men Legacy
-The last really good main back was Uncanny with Gillen (and his consequences of Avengers vs XMEN
Bunn's Magneto was good too, and his Uncanny, which was more like X Force (or a brotherhood of Evil mutants book), was decent.
Secret War had many good to great X Men tie ins (E is for Extinctions, Extinction Agenda, Inferno, Age of Apocalypse, House of M). They were all good or great, except the Days of the Future Past one.
The best Tie In of Secret Wars was also very X Men related. Siege, written by Gillen, with Abigail Brand as main character.
pic related, Magik being Lesbian in Siege, riding her brother